diffcult和difficulty有什么区别?
hard和diffcult究竟有何区别?
have difficulty什么时候用doing,什么时候用to do?有什么区别?
have trouble doing和have difficulty in doing有区别吗?
sb be faced with difficulty,sb face difficulty有区别吗?
difficulty in 与difficulty to 的区别
difficulty problem trouble区别
difficulty,hardship 的区别
请问,There is difficulty in doing句型和It is difficulty to do ,有什
quarter表一刻钟时可数吗,例子,diffcult和hard的区别
lower difficulty什么意思
have difficulty 后跟什么?
和有什么区别?