n.平衡物；平衡力；砝码
It's useless, the counterweight won't go any lower. 这没用，平衡物不会降低。
The counterweight and the chariot seem to weigh the same. 平衡物和战车似乎一样重。
Using water as a counterweight, the pot slowly tips over when water levels are low. 一旦水槽里的水少了，就会失去平衡倾倒。
