不胜酒力

不勝酒力
bùshèngjiǔlì
to become intoxicated after having only one or two drinks

CEDICT

to get drunk easily

Wiktionary

Entry Composition

1 不胜 bùshèng
  1. cannot bear or stand
  2. be unequal to
  3. very
  4. extremely
2 酒力 jiǔlì
  1. capacity for alcohol
  2. ability to hold drink