HSK 7-9
残留
cánliú动
to remain; to be left over; residual; remnant; residue
杯底还残留一点药味。
Bēi dǐ hái cán liú yì diǎn yào wèi.
A slight medicinal smell remains at the bottom of the cup.
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Appears across levels (7-9) in the HSK 3.0 word list.