字首 Ｓ
單字 seal
音標與例句
    音標 [ sil ]
    Make sure that the lip seal (11) is in a good condition.
    確認唇形密封墊(項目11)的狀況良好。
    The opening for the neck is sealed.
    頸部的開口被封住了。
字義 n.[C]密封墊，封膠; vt.封，密封
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