sheath的一般过去时怎么拼写

sheath的复数形式为：sheaths...

n.护套，鞘，叶鞘，紧身装v.包，盖...

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....

sheath的音标：sheath的英式发音音标为：[ʃi:θ]sheath的美式发音音标为：[ʃiθ]...

sheath的第三人称单数（三单）为：sheaths...

sheath的现在进行时为：sheathing...

sheath的现在完成时为：sheathed...

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 ...

匹配负载阻抗之传输线上无反射.No reflection will appear on a line with matched load.研究弱激光驻波场中的无反射势阱.The reflectionless potential well affected by a standing laser field is studied.光线被黑面吸收(而无反射).Light rays are absorbed by black surfaces...

vt.解放（奴隶）...

v.使目眩( bedazzle的过去式和过去分词 )，使眼花缭乱，把（人）弄糊涂，使（人）迷惑...

“佛尔酮”的拼音为：fó ěr tóng...

“掰”的拼音为：bāi...

explosive的复数形式为：explosives...

vt.推翻，无视，践踏，优先于，覆盖n.佣金，超驰控制装置，撤消，推翻...

习惯性吸砷...

v.在…周围划线( circumscribe的第三人称单数 )，划定…范围，限制，限定...

Woodpeckers inhabit hollow trees.啄木鸟栖息在中空的树中.Leaves rustled lightly in the wind and woodpeckers tapped at tree trunks.风在林间吹过,叶子微微作着声响.岭上啄木鸟在波波地敲着树子.Woodpeckers inhabit in hollow trees.啄木鸟栖息在中空的树中。...

lycopsida的音标：lycopsida的英式发音音标为：['laɪkɒpsɪdə]lycopsida的美式发音音标为：['laɪkɒpsɪdə]...

The governor has declared his innocence and says he plans to serve out his term.州长已宣称自己是清白的，并说他打算任职到期满。Hunter, serve out a round of brandy to all hands.'亨特, 给所有的人倒点白兰地. ”Shall I serve out the soup or would you like ...

v.不服从，不顺从( disobey的过去式和过去分词 )...

v.急促地说，不清地说( gabble的过去式和过去分词 )...

n.水位记录仪...