Taivo A Taiwan Mandarin dictionary

跟手

gēnshǒu

ㄍㄣ ㄕㄡˇ

  1. 1(coll.) while doing it; on the way through
  2. 2(coll.) immediately; at once
  3. 3(of a touch screen) responsive to the user's finger movements

Keep 跟手 and it comes back until you know it.

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