这个土丘可做我们的掩蔽物.The mound can be used as our screen.敌人趁夜袭击(即有夜色作掩蔽).The enemy attacked by night, ie under cover of darkness.有时候部分车辆 、 房屋和其它财产被掩蔽起来.Sometimes cars, buildings, and other properties are partially buried....
The philosopher speculated about the future of the human race.那位哲学家考虑过人类的前途.He speculated that he would succeed.他推测他将成功.Would he be what he is if he hadn't speculated on the stock of exchange?如果不搞证券投机买卖,他会成为今天这个样子 吗...