Grader可以指以下三个方面：
1. 年级评分机
Grader在英语中还可以指一种常见的机器，叫做”grade machine”或”grader”，用于对某种产品进行分级，以便分别出售或回收。在学术领域中，这个词也经常用于指代学生答卷的自动打分系统。
例句：
– The grader is used to sort and grade fruit by size and quality.
（这台分级机通常用于按尺寸和质量对水果进行分类和分级。）
– The online test will be automatically graded by the grader system.
（在线测试将由自动打分系统进行评分。）
2. 年级
Grader还可以指学校中的年级，通常是指小学和初中的年级。例如，xx年级、xx年级等等。
例句：
– She is in the second grader cl.
（她在xx年级班级。）
– The school is currently accepting applications for new first graders.
（学校目前正在接受新xx年级学生的申请。）
3. 等级
除了上述两种含义，grader还可以指一种等级，通常用于描述某个人或物品在某个方面的表现或评价。例如成绩、技能等等。
例句：
– I got a B on my history paper. That’s a good grader!
（我在历史论文中得了个B，这是个不错的成绩！）
– After several years of practice, she has moved up to the top grader in her piano cl.
（经过几年的练习，她已经升到了钢琴班级的顶尖等级。）
综上所述，grader的三种含义分别是”年级评分机”、”年级”和”等级”。以下是5个相关的中英文例句：
1. Please use the grader to sort the apples by size.
请使用分级机根据大小将苹果分拣。
2. My little sister is a first grader at the local elementary school.
我妹妹在当地小学读xx年级。
3. The teacher gave me a good grader on my essay.
老师在我的文章上给了我一个好的评分。
4. The construction supervisor will use a grader to level the site.
施工监督员将使用平地机将现场整平。
5. Many college programs require a minimum grader point average to graduate.
许多大学课程要求学生毕业时必须达到最低平均成绩。
grader的中文翻译是“平地机”，读音为[grey-der]。
例句：
1. The construction crew used a grader to level the ground.
建筑队使用平地机来铺平地面。
2. The grader moved slowly but steadily along the dirt road.
平地机沿着土路缓慢而稳定地行进。
grader在中文中有”平地机 、平土机”的意思，其次还有”阅卷人”的意思，在线读音是[‘^reidә]，在英语中以名词出现较多，在《牛津英汉双解词典》中，共找到79个与grader相关的例句。
1.平地机
例句:But if it is messy and occasionally mawkish, “The First Grader” is rarely dull. (尽管影片《xx年级生》的结构有些凌乱，情节偶尔让人产生伤感，但总体上并不让人感觉沉闷。)
2.平土机
例句:I got kidnapped by a fourth grader. (什么 What? 我被一个xx年级小孩绑架了 I got kidnapped by a fourth grader.)
3.阅卷人
例句:A fifth grader with no hands won a penmanship award in the National Handwriting Contest. (一名xx年级失去双手的小孩在国家书法大赛上获奖。)
4.把东西分类别的人、阅卷人
例句:The book read most often by first reader (grader) was Grand(Green) eggs and Ham by doctor Seuss. (翻译:苏斯博士的《绿鸡蛋与火腿》是xx年级学生最常阅读的书。)
grader一般作为名词使用，如在disk grader((窝眼)圆盘精选机)、drawn grader(拖式平地机)、egg grader(蛋分级机)等常见短语中出现较多。
1. A fifth grader with no hands won a penmanship award in the National Handwriting Contest. (翻译:一名xx年级失去双手的小孩在国家书法大赛上获奖。)
2. The book read most often by first reader (grader) was Grand(Green) eggs and Ham by doctor Seuss. (翻译:苏斯博士的《绿鸡蛋与火腿》是xx年级学生最常阅读的书。)
3. It must have been hard for her to tell the awkward, freckle -faced first grader the truth. (翻译:对妈妈来说，把告诉这么一个笨手笨脚、满脸雀斑的xx年级小学生，肯定很痛苦。)
4. “I taught my mom to use E-mail,” says another eighth-grader, Katherine Hypolite. (翻译:“我教妈妈使用电子邮件，”另一位xx年级学生凯瑟琳·海珀莱特说道。)
5. So the average Western first-grader spends as much as 50 percent of their play time taking part in what’s called “construction play.” (翻译:平均的西方小一学生 花游戏时间的一半之多 做所谓的“建构游戏”。)
6. Then she rounded the bend and saw a beautiful sight: a road grader, laboring uphill with its snowplow lowered. (翻译:她咕哝道，然后拐过弯去，只见一幕美丽的画面：一辆平路机正用雪犁一边铲雪，一边向山上驶去。)
7. D5 Dresser. Carter. Vaud and Vaud. Komatsu Grader rubber seal products. (翻译:D5及德莱赛。卡特。沃而沃。小松平地机橡胶密封制品。)
8. His stepbrother, a fifth-grader, “seemed older” at spring break, “almost in that age where he kind of wants guidance, like a big brother,” Sannes said. (翻译:他的过继弟弟，一个xx年级生，在春假时“看起来长大了”，“差不多到了想要什么人，比如一个大哥哥指引的年纪。”塞那斯说。)
9. You have a very big mouth for an eighth grader, Murphy. (翻译:你知道，你有 一个非常大的口 xx年级，墨菲。)
10. Fifth-grader Lucy Thao, 10, is proud of their father’s service. (翻译:xx年级的露西邵族，xx日，感到自豪的是其父亲的服务。)
11. So the average Western first-grader spends as much as 50 percent of their play time taking part in what’s called “construction play.” (翻译:平均的西方小一学生 花游戏时间的一半之多 做所谓的“建构游戏”。)
12. Besides, even a seventh grader would know that entire families aren’t allergic to eggs. (翻译:再说了 xx岁小孩都知道 全家人不可能同时对鸡蛋过敏)
13. During a recent small group lesson on word usage, second-grader Tony Ceja and third-grader Christopher Pacheco faced each other as they drew pictures and wrote sentences. (翻译:在最近的一次单词用法的课上，xx年级的Tony Ceja和xx年级的Christopher Pacheco面对面，一个在那画出单词所表达的意思，一个用单词造句。)
14. Second Grader Shawn McNair tries to find some of the toys he donated. (翻译:xx年级生夏恩麦卡尼尔试图找寻部分他捐献的玩具。)
15. Yeah, but only because I was dating a second grader. (翻译:琌摆 琌иê穦 Γ帝蛤ネ穦㎡)
grader作为名词的时候，其近义词以及反义词有s、graders等。
