n.水坝；堤；障碍物
v.筑坝；抑制(情感等）
The dam was not strong enough to hold back the flood waters. 水坝不太坚固，挡不住洪水。
The village was swept away when the dam burst. 村庄在水坝决堤时被冲走了。
The water deepened after the dam was built. 堤坝建成后水已加深。
The river keeps rising and the dam is threatened. 河水不断上涨，大堤出现险情。
A dam is a barrier holding water back. 水坝是防堵水的障碍物。
用作动词 (v.)They are going to dam up the river to set up a hydropower station. 他们准备拦江筑坝建水电站。
It's hard to dam up one's feelings. 一个人要抑制自己的感情是不容易的。
dam用作动词作“筑坝拦水,以水坝阻拦”“挡住”解,指用障碍物堵塞,以防止水流、眼泪等继续流出,其后可接名词或代词作宾语。引申可表示“抑制,克制”,这时常与up连用。
