1 PHRASAL VERB 了解;查清 If you check up on something, you find out information about it. 了解;查清
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It is certainly worth checking up on your benefit entitlements. [VERB PREP. + on]
查清楚你可以享受哪些福利是绝对有必要的。
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The Government employs tax inspectors to check up and make sure people pay all their tax. [VERB PREP.]
政府雇用税务稽查员做检查工作,以确保人们足额纳税。
3 PHRASAL VERB (常指秘密地)调查,侦查 If you check up on someone, you obtain information about them, usually secretly. (常指秘密地)调查,侦查