1 谜,谜语
例句:that painting is still a riddle to us.那幅画对我们来说仍然是个谜。
play it by ear随机应变 例句: facing his enemy, he had to play it by ear.面对敌人,他只有随机应变了。
thank you for having us.谢谢你请我们做客。
对话:a: i'm afraid i've got to go now. thank you for having us. we had a good time.b: it was a pleasure. a:恐怕现在得走了,谢谢你邀请我们做客,我们玩得很开心。b:你们玩得好,我也很高兴。