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外插
wàichā
1. to extrapolate
2. extrapolation (math.)
3. (computing) to plug in (a peripheral device etc)

Character Breakdown

外
wài
out, outside, external; foreign; in addition
HSK 2 5 丶
插
chā
to insert, to stick in; to pierce; to plant
HSK 5 12 丶

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Category
Chinese