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n.护套，鞘，叶鞘，紧身装v.包，盖...
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sheath的现在完成时为：sheathed...
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sheath的第三人称单数（三单）为：sheaths...
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sheath的一般过去时为：sheathed...
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sheath的现在进行时为：sheathing...
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sheath的复数形式为：sheaths...
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the sheath around an electric cable电线护皮He drew his sword from its sheath.他拔剑出鞘.This suit of clothing is more inexpensive than that sheath.这套衣服比那套便宜....
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Coleorhiza ( pl . coleorhizae ) The protective sheath surrounding the radicle in grasses.胚根鞘:保护幼根的鞘状结构.Conclusion Saber sheath trachea is a sign of rather severe COPD.结论剑鞘气管是较重的copd的标志.Coleoptile A sheath like structure ...