Impulsor
[數(shù)]非共面直線對
??? 情景例句
She worried constantly.
她經(jīng)常煩惱。
It depends on the quantity ordered.
這要根據(jù)所訂的數(shù)量而定。
There was a note of triumph in my voice when I told him that it was there in black and white.
我?guī)е环N勝利者的調(diào)子告訴他那趟車白紙黑字。明明白白印在時(shí)刻表上。