Weak or vulnerable point; fault, esp in sbs character, which can lead to his downfall.

致命弱点；（尤指某人个性中可导致一败涂地的）缺陷。

youdao

Faces: the only open vulnerable point is their neck, which is open because they're, well, speaking to each other.

脸部：露出来的最易受攻击的部位就是脖子了。他们露出脖子说明他们在好好说话。

youdao

Do you think each of us has a particular weak spot, a vulnerable point in our heart or life, that makes us subject to spiritual failure?

你认为人人心中或生命中都有特别脆弱的一环，足以令他灵性跌倒吗？

youdao

Mr Trimble's most vulnerable point has always been the fraught business of decommissioning.

ECONOMIST: Enemies and colleagues

There is a risk that history will repeat itself, as millions of poor and low income families find themselves at their weakest and most vulnerable point in the aftermath of the crises.

FORBES: Inclusive Crises and Exclusive Recoveries?

WikiLeaks' most vulnerable point is people.

ECONOMIST: WikiLeaks