... first surface mirror ==> 外表面镀膜反射镜,表面镀膜镜 first swing ==> 初动 first symbol ==> 首符,开头符号 ...
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For example, before you can throw a ball you must first swing your arm backwards.
例如,在你扔一个球时你必须引手臂到身后。
When astronaut Alan Shepard took his first swing at a golf ball on the moon, he hit more dirt than ball.
当宇航员艾伦·谢泼德在月球上打出第一杆高尔夫球时,他扬起的更多是的沙尘。
But first swing it a little and don't hold it too close to you because I don't want you to get hurt.
先轻轻荡一点,别拿得太近了,我可不希望它伤到你。
Well it'll be interesting to see if you swing at the first pitch and decide to take this class on.
我很希望大家能,上了试听课后,继续选修这门课
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