Lunar craters can be plainly seen with the aid of a small telescope.借助小型望远镜可以看清月球上的环形山.A series of collapse craters , or calderas, lie at its summit.其顶端有一系列崩塌的火山口, 或称火山臼.Tropical plants, sandy desert, waterfalls, craters...
头发生长的速度可能极其缓慢。The rate at which hair grows can be agonisingly slow.在我生长的伦敦，四周全是轰炸后的断壁残垣。In London, where I grew up, we were surrounded by bomb sites.象牙磨损的速度快于生长的速度。Elephants wear the tusk down faster than they can grow i...
Gunga spoke God knows how many languages.天晓得贡嘎会讲多少门语言。Old Gunga spoke God knows how many languages.老贡嘎会说很多种语言，天晓得有多少种。You're a better man than I am , Gunga Din.你比我好, 冈噶·丁....