but it's difficult for them to fall asleep.的意思是什么?waiter(对应词)是什么 ,fall asleep的单独意思是什么？

What do you think ( ) English ?It's difficult but interesting. It's difficult it's difficult for The passage tell us “It's easy to say ,but it's difficult to do The story ——（it）is interesting,but it's a little difficult for children. 英语翻译Maybe it is a little difficult,but it's really necessary.求翻译~ it's easy to forget someone apparently ,but difficult deeply.it's easy to forget someone apparently ,but difficult deeply.省略的有没有问题,请指正! Is difficult to forget the past~But i know it's hard but i gotta do it是什么意思 开始容易,坚持难 英文翻译 It`s easy ___ ___ ___ ,but difficult to keep on. This math problem is s_____ for you,but it’s difficult for such a young boy It's easy to p__ but difficult to keep them横线填什么 the exam paper＿easy at first,but it's really quite difficult. The n____ science is difficult,but it's important and useful. It's difficult to choose! It's so easy to hurt someone,but it's such difficult to fall in love with somebody.) you may think it's easy for your parents to use them,but it is difficult for you.是什毛意思? you may think it's easy for your parents to use them,but it is difficult for you.是什毛意思 It's very difficult to learn English well,but you can't___.a.put it up b.take it up c.look it up d.give it up