underdrain

[ˈʌndəˈdreɪn] [ˈʌndərˌdreɪn]

n. 暗渠;阴沟

vt. 开阴沟排水

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    2023-03-26 21:25:01 2023-03-26 22:48:56 2023-03-26 22:12:59 2023-03-26 21:23:04 2023-03-26 21:26:38 2023-03-26 22:28:52 2023-03-26 21:21:38 2023-03-26 21:24:22 2023-03-26 23:15:11 2023-03-26 22:01:20 2023-03-26 22:15:24 2023-03-26 23:04:36 2023-03-26 22:11:34 2023-03-26 23:28:13 2023-03-26 22:57:53 2023-03-26 22:29:21 2023-03-26 22:43:10 2023-03-26 23:00:24 2023-03-26 22:11:32 2023-03-26 22:19:54