1.amateur astronomers 業余天文學家
例句:I would again encourage all interested amateur astronomers to new attempts in this direction.
我要鼓勵所有感興趣的業余天文學家在這方面做出新嘗試。
2.take place 發生;舉行
例句:Elections were postponed the day before polling was due to take place.
在預定進行投票的前一天選舉被延期。
3.at the time 那時;當時
例句:I was not in Britain at the time.
當時我不在英國。
4.set out 出發;開始
例句:When setting out on a long walk, always wear suitable boots.
每次出發遠行,都要穿合適的鞋子。