replacement
英 [rplesmnt] 美 [rplesmnt]
n.替换;更换;替代品;替换物;(尤指工作中的)接替者，替代者
复数： replacements
例句：
Their threat to hire replacement workers has the union with its back to the wall.
他们威胁说要雇用替工，这使工会陷入了困境。
Sending a replacement jet would have been uneconomic.
当时派一架喷气式飞机去替换的话，代价太大了。
