低年级的英文：
junior class

参考例句：

Fag:a student at a British public school who is required to perform menial tasks for a student in a higher class.
受高年级使唤的低年级学生:在英国公立学校为高年级同学做跑腿活儿的学生。

He is a teacher of a lower form.
他是低年级的老师。

She teaches a junior class.
她教一个低年级班。

Many junior studetns have to wear short-sighted glasses for reading
许多低年级的学生不得不戴起近视眼镜看书。

Let me direct these remarks to the younger students.
这些话还是让我来对低年级的学生说吧。

act as a fag for older boys, in British public schools.
在英国公立学校低年级为高年级的同学作苦工。

The headmaster asked for volunteers to take in hand the training of the junior rugby team.
校长要求有人自愿担负起对低年级橄榄球队训练的责任。

[C](Brit)(formerly)junior boy at a public school performing certain duties for a senior boy
(旧时)公学中为高年级男生服务的低年级男生.

junior是什么意思：
adj. 地位较低的；晚辈的；年纪较轻的；三年级的
n. 职位较低者；晚辈；三年级学生

There are lots of jobs in junior grades.
初级阶段有很多工作要做。

junior sports development
青少年体育发展

There are separate rooms for senior and junior officers.
高级军官和下级军官的房间是分着的.

He left college in his junior year.
他是在大学三年级时辍学的。

Generally speaking, the female is not junior to the male in wisdom.
一般说来，女孩子和男孩子一样聪明。

class是什么意思：
n. 班级；阶级；种类
v. 分类；把…分等级
adj. 很好的

It is a step class.
这是踏板操训练班。

The class dismissed.
下课了。

The class teacher sectioned the class for dialogues.
老师把班级分组进行对话练习。

The class teacher dismissed the class on time.
教师按时下课。

A second - class letter is slower than a first - class.
二类信比一类信件慢。