题目内容
5. 洗衣机发明后，我们不需要手工洗衣服了。
6. 把猪肉放在冰箱里面，防止它变质。
5. We don't need to wash clothes by hand after the invention of the washing machine.
6. Put the pork in the fridge to prevent it from going bad.
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题目内容
5. 洗衣机发明后，我们不需要手工洗衣服了。
6. 把猪肉放在冰箱里面，防止它变质。
5. We don't need to wash clothes by hand after the invention of the washing machine.
6. Put the pork in the fridge to prevent it from going bad.