HSK 7-9
假冒
jiǎmào动
to impersonate; to pose as (someone else); to counterfeit; to palm off (a fake as a genuine)
假冒医生在诊所非法行医。
Jiǎ mào yī shēng zài zhěn suǒ fēi fǎ xíng yī.
An impostor posed as a doctor and practiced illegally at the clinic.
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Appears across levels (7-9) in the HSK 3.0 word list.