dam: [12] Dam, appropriately enough for a word related to the human control of water-courses, seems to have been borrowed from Middle Dutch dam. It appears to have been a fairly widespread West and East Germanic word, subsequently borrowed into North Germanic, but its ultimate source is not known.
dam (n.1)
"water barrier," early 14c., probably from Old Norse dammr or Middle Dutch dam, both from Proto-Germanic *dammaz (cognates: Old Frisian damm, German Damm), which is of unknown origin.
dam (n.2)
"animal mother," c. 1300, variant of dame (q.v.), also originally used, like that word, for "lady, mother;" but meanings diverged into separate spellings by 16c.
dam (v.)
late 15c., from dam (n.1). Related: Dammed; damming.
实用例句
1. Breaking the dam could submerge downstream cities such as Wuhan.
摧毁大坝可能会淹没下游城市，比如武汉。来自柯林斯例句
2. The dam will stand 600 feet high.
大坝将高达600英尺。来自柯林斯例句
3. A dam burst and flooded their villages.
堤坝决口，淹没了他们的村庄。来自柯林斯例句
4. Building a dam here could have unforeseeable consequences for the environment.
在这里修建水坝可能会对环境造成无法预料的后果。来自《权威词典》
5. They built dykes and dam to hold back the rising flood waters.
