重点词汇
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为什么
why; wherefore; how; for what reason; how come; why is it that; how is it that; the reason why; what for
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效力
serve; render a service to; effect; efficacy; potency; force; edge
中英释义：
为什么效力
时间: 2026-02-08 02:44:21
Why is it effective?