Surfaces may be fairly smooth or irregular, hummocky or ridged. 其表面也许是相当平滑或不规则, 成波形或背状.
The burying - ground is merely a huge waste of hummocky ( hilly ) earth , like a derelict ( deserted ) building - lot. 坟场只不过是一片 土丘 林立的荒野, 恰似一片已废弃不用的建筑场地.
杰克逊镇定自若，始终克制着情绪。Jackson remained calm and always master of his passions.她一整天都在克制自己想给哈里打电话的冲动。All day she had fought off the impulse to telephone Harry.她没能克制住自己，起身走向电话。Unable to restrain herself, she rose and went to the ...
我们从井里抽水以供日用.We pump water from the well for daily use.他正用抽水机抽水.He was pumping away.他们设计了一套从地下70米处抽水的系统。They have designed a system which pumps up water from 70m below ground....
Ammonium chloride vaporizes on heating, and sublimes back to a solid on cooling.氯化铵受热蒸发, 升华,冷却还原为固体.Water vaporizes when boiled.水沸了就变为蒸气.Petrol has a low boiling point; if a little is poured into the hand, it vaporizes.汽...