Flex stiffness
[化] 耐屈挠疲劳
🧩 词语组成解析
flex
[fleks]
v. 弯曲（关节）;收缩（肌肉）;显示力量;
n. 弯曲;[电]花线;
🗣️ 情景例句
It's important for you to keep a cool head at this moment.
这时候保持头脑冷静是很重要的。
David would get up early in the morning to deliver newspaper.
戴维一早起床就去送报纸。
Is this your bike?
这是你的自行车吗？