衍射光栅(diffraction grating的复数)
One day a husband was chiding (斥责)his beautiful blonde wife about leavingher keys in the ignition (点火处)of her car. If I take them out of the car I lose them, she reasoned. Yes dear, but what if someone steals your car? the husband cou
发表于:2019-02-07 / 阅读(131) / 评论(0)
趣味英语