日韩欧美国产手机在线观看,夜夜躁日日躁狠狠久久,国精产品一区二区三区的使用方法,日韩一区二区三区四区五

8.6 try doing/to do
?	try to do　　努力，企圖做某事。　 try doing　試驗，試著做某事。 You must try to be more careful. 　你可要多加小心。 I tried gardening but didn't succeed. 我試著種果木花卉，但未成功。