- decametre(s).同DECAMETRE或decametres.
1
- a barrier, typically of concrete, constructed to hold back water and raise its level, the resulting reservoir being used in the generation of electricity or as a water supply水坝。
1.1
- chiefly S. African an artificial pond or reservoir where rain or spring water is collected for storage〈主南非〉水库。
1.2
- a barrier of branches in a stream, constructed by a beaver to provide a deep pool and a lodge（海狸筑起的）坝。
1.3
- chiefly N. Amer. a rubber sheet used to keep saliva from the teeth during dental operations〈主北美〉（牙科手术中的）橡皮障。
(dammed, damming)with obj.
1- build a dam across (a river or lake)在（河, 湖）上筑坝。
1.1
- hold back or obstruct (something)阻止; 抑制; 阻碍：
the closed lock gates dammed up the canal.
关闭的闸门将运河阻断。
词源
Middle English: from Middle Low German or Middle Dutch; related to Dutch dam and German Damm, also to Old English fordemman 'close up'.