I know how you feel, but there's no need to go on and on about it.
我知道你的感受,可是也没必要这样没完没了。
I'm sorry. I can't make it on Tuesday.
对不起,星期二我无法参加。
Professor Ronald Bracewell, a leading American radio astronomer,argued in Nature that such a superior civilization, on a visit to our own solar system,