Bicylinder
雙柱面透鏡
??? 情景例句
So, what do you think you're going to do?
那么你打算怎么辦呢？
I succeeded because I willed it; I never hesitated.
我成功是因為有決心，從不猶豫。
It has never been explained why university students seem to enjoy practical jokes more than else.
誰也弄不清為什么大學(xué)生好像比任何人都更喜歡惡作劇。