Trigonometrical
a. 三角的, 三角法的, 三角學(xué)的
? 同義詞
??? 情景例句
Long time no see.
好久不見。
There is nothing which has not been bitter before being ripe.
事情在成功前沒有不艱苦的。
I can't take you any more!
我再也受不了你啦！