periscope head 中文意思是什麼
periscope head
解釋
潛望鏡端部-
A water snake glided smoothly up the pool, twisting its periscope head from side to side.
一條水蛇蜿蜒到水潭來,扭伸著頭,把它象潛望鏡似的擺來擺去。
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