名詞 flinch:

1. a reflex response to sudden pain
   同義詞：wince

動詞 flinch:

1. draw back, as with fear or pain
   同義詞：squinch, funk, cringe, shrink, wince, recoil, quail

1. I never flinch from difficulty.
   我在困難面前從不畏縮。
2. We never flinch from difficulties.
   在困難面前我們決不退縮。

flinch

v.intr.（不及物動詞）
flinched,flinch.ing,flinch.es
To start or wince involuntarily, as from surprise or pain.
退縮：由于驚奇或疼痛而驚起或退縮
To recoil, as from something unpleasant or difficult; shrink.See Synonyms at recoil
畏縮：從一些令人不愉快的或困難的事中退縮；畏縮參見 recoil
n.（名詞）
An act or instance of starting, wincing, or recoiling.
退縮，畏縮：驚起、退縮或畏縮的行為或?qū)嵗?/br>
來源：
Obsolete French flenchir
已廢法語 flenchir
[of Germanic origin]
[源于日耳曼語]

【引伸】
flinch.er
n.（名詞）
flinch.ingly
adv.（副詞）