Descum
清除浮渣
??? 情景例句
If we're all prepared to recycle paper, thousands of trees could be saved every day.
如果紙能被循環利用，那么每天千千萬萬的樹木就可得以挽救。
Her mirror might crack if she uses it too much!
如果她用得太過分了，她的鏡子可能會壞掉哩。
In the centre of the hall, there were a number of tall structures which contained coloured lights.
展廳中央是裝有彩色燈泡的許多高高的構件，