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
Stone is still in the hospital, but he's making good progress.
世通还在医院，但他的身体康复得很快。
Knowledge will not be aquired without pain and application.
不花力气，不下功夫是得不到知识的。
Yes, that's right.
是的。