1、In difficulty of learning, music lies somewhere in between speaking and writing.
從學(xué)習(xí)難度上看，音樂在說話和寫作的中間地帶。

2、When I am in difficulty he kindly comes to my assistance
我遇到困難時,他好心地來幫助我

3、The task varied in difficulty according to the pitch of the second tone.
這項任務(wù)的難度隨著第二個音調(diào)的高低而變化。

4、One of the station staff saw he was in difficulty and came to his aid.
一位車站工作人員見他有困難，便過來幫忙。

in difficulty翻譯