Reciprocation
[ [riˌsiprə'keiʃən] ]
出国 Abroad
n. 交互作用, 交换, 往复运动\\n[电] 互易法
✅ 同义词
📖 牛津释义
reciprocation
n[U].
🗣️ 情景例句
We started by making safety equipment for many sports.
我们是以做运动产品的安全器材起家的。
Change is in the air.
人们感觉即将发生变革。
What was the population of the world in 1950?
1950年世界人口是多少？