1 PHRASAL VERB 吃光;吃完 When you eat up your food, you eat all of it. 吃光;吃完
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Eat up your lunch. [VERB PREP. noun]
吃完你的中饭。
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Some seed fell along the footpath, and the birds came and ate it up. [VERB noun PREP.]
有些种子散落在小路上，鸟儿飞来把它们吃光了。
2 PHRASAL VERB 耗费（大量金钱、时间或资源） If something eats up money, time, or resources, it uses them or consumes them in great quantities. 耗费（大量金钱、时间或资源）