话题 aimed in the right dirction

话题 take your time in doing

话题 look sb in the eye

话题 pursue control in conversion mode

话题 have difficulty in doing sth

话题 have difficulties in doing sth

话题 The problem is in/with...

话题 wrinkled in an apologetic smile

话题 play about in the way

话题 be slow in being done

话题 the window in my car

话题 be a study in sth

问题 the English expression in question的理解与翻译

And if you happen to know the English expression in question, translation becomes easy.

问题 at the library 和 in the library 的区别

请问：at the library 和 in the library 有区别吗？谢谢！

问题 rush hour前面用介词in与at的区别

有时看到在 rush hour 前面用介词 in，有时看到在 rush hour 前面用介词 at，两者有什么区别吗？