Underbelly
n. 下腹部, 薄弱部分
📖 牛津释义
underbelly
n[sing]
1 undersurface of an animal's body, eg as a cut of meat, esp pork（动物的）下腹部（如切下的一块, 尤指猪肉）.
2 (fig 比喻) area, region, etc that is vulnerable to attack 易受攻击的部位、 区域等
The stock-market crisis struck at the soft underbelly of the US economy, eg its trade deficit. 股市危机打击了美国经济的薄弱环节（如贸易逆差）.
🗣️ 情景例句
It was a gradual process, involving many factors.
这是个渐进的过程，涉及到方方面面。
Yes, I do.
是的，我有。
is a mass of detailed behaviour more astonishing than what any one person can ever evolve in individual actions, no matter how aberrant.
是由许多细节性的习惯行为组成，它比任何个人养成的行为都更加引人注目，不管个人行为多么异常。