Taivo A Taiwan Mandarin dictionary

能上能下

néngshàngnéngxià

ㄋㄥˊ ㄕㄤˋ ㄋㄥˊ ㄒㄧㄚˋ

  1. 1ready to take any job, high or low

Keep 能上能下 and it comes back until you know it.

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