1、I am glad to receive your letter.很高兴收到你的来信。 2、It has been a long time since we met.我们很久没见面了。 3、I am looking forward to receiving your letter.我期待着你的来信。 4、Time past cannot be called back again。光阴—去不复返。 5、obviously,If we want to do something,it is essential
that……显然，如果我们想做某事，很重要的是…… 6、Further
