英语释义
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n. A genus of large edentulous sirenians, allied to the dugong
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and manatee, including but one species (R. Stelleri); -- called also
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S () the nineteenth letter of the English alphabet, is a consonant, and
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is often called a sibilant, in allusion to its hissing sound. It has
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two principal sounds; one a mere hissing, as in sack, this; the other a
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vocal hissing (the same as that of z), as in is, wise. Besides these it
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sometimes has the sounds of sh and zh, as in sure, measure. It
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generally has its hissing sound at the beginning of words, but in the
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middle and at the end of words its sound is determined by usage. In a
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few words it is silent, as in isle, debris. With the letter h it forms
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the digraph sh. See Guide to pronunciation, // 255-261.