词典释义：
释义
adj.
lacking physical strength, especially as a result of age or illness
（尤指因年老或疾病而）虚弱的，衰弱的，乏力的
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my legs are very feeble after the flu .患了流感之后，我的两条腿软弱无力。
(of a sound)faint
（声音）无力的，微弱的，不清楚的
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his voice sounded feeble and far away .他的声音听起来很微弱而且很远。
lacking strength of character
（性格）弱的，软弱的
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she overreacted in such a feeble, juvenile way .她的过激反应是那么的无力和幼稚。
failing to convince or impress
不能给人留下印象的，不具说服力的
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a feeble excuse .难以服人的借口。
词源
"Middle English： from Old French
