1.
optical mask stepper
光学步进重复照相机
2.
Toddlers keep tumbling over.
学步的儿童老是摔跤.
3.
Just go slowly. Take it step by step.
慢慢学，一步一步地往下学就行了。
4.
Rationality and Modes of Scientific Progress;
科学进步的合理性以及科学进步模式
5.
High School Mathematics "Preliminary Algorithm" Preliminary Study of Teaching
高中数学“算法初步”教学的初步研究
6.
The students were running around their school.
学生们正围着学校跑步。
7.
Next, they must acquire a bigger vocabulary.
第二步，再学进一步的文字和语汇。
8.
Learning a foreign language is a step by step process.
学习外语是一步一步的过程。
9.
Discussion on the Stating Stage of Creating the Studying Enterprise;
创建学习型企业起步阶段的初步探讨
10.
This dance step is quite easy to learn.
学这个舞步挺容易的。
11.
I've just learned how to dance this new step.
我刚学会跳这种新舞步。
12.
I ran as fast as I could to school.
加紧脚步飞奔到学校。
13.
Their subjects consisted of running,
他们的学科包括跑步、
14.
She walked home after school.
放学后她步行回家。
15.
synchronous optical bombsight
同步光学轰炸瞄准具
16.
They walk to school every day.
他们每天步行上学。
17.
he mastered the rudiments of geometry.
他掌握了几何学初步。
18.
Both will have to learn to give and take.
双方都得学会互相让步。