用塑料代替金属
substitute plastic for metal
用国产品代替进口货
substitute domestic products for imported goods
用女工代替男工
substitute female labour for male labour
找人代替
look for a replacement
代替办法
alternative method
请人临时代替自己
ask someone to fill in temporarily
代替别人工作
do someone else's job on their behalf
繁重的体力劳动为机器所代替。
Heavy manual work has been replaced by machinery.
新生的代替腐朽的，这是自然发展的规律。
The new replacing the decayed is the natural law of development.
我们不应以愿望代替现实。
We should not substitute our hopes for reality.