predator n.食肉动物；奴役他人者(尤指在财务或性关系方面)
necessitate vt. 使……成为必要, 需要
Your proposal necessitates borrowing money.
你的提议使借款成为必要。
colossal adj. 巨大的
Some of the tall buildings in that city are colossal.
那座城市里的高层建筑很庞大。
deposit vt. 放置; 放下
He deposited the books on the desk.
他把书放在桌子上。
存放; 交与…保管
He's deposited quite a lot of money recently.
他最近存了不少钱。
付订金
He deposited a small amount of money toward the purchase of the car.
他为买这辆汽车先付了少量订金。
silt n. 淤泥, 淤滓vt. & vi. (河流等)为淤泥淤塞
Mud and silt have been continuously deposited in the lake.
泥沙不停地淤积在这湖里。