Alternando
更比定理
🗣️ 情景例句
to work out a program
想研拟一项计划
We went to a concert last night to hear the symphony orchestra.
我们昨晚去了一个音乐会听交响乐乐队演奏。
But as they soon discovered, disguises can sometimes be too perfect.
但他们很快就发觉，化装的效果有时过分完美了。