Physically weak or ill, especially from age or disease.

• Frail in health; needing care.

身体虚弱或患病，尤指因年老或疾病。

• 健康状况脆弱；需要照料。

Lacking firmness of will or judgment; irresolute.

• Unstable or shaky; not solid or secure.
• Based on weak reasons or evidence; unsound.

意志或判断不坚定；优柔寡断。

• 不稳固或摇晃；不牢靠。
• 理由或证据薄弱；站不住脚。

To weaken or invalidate a claim, argument, or authority.

• To disprove or undermine.

削弱或使主张、论点或权威无效。

• 反驳或削弱其效力。