“潜望镜”的英语？

“潜望镜”的拼音为：qián wàng jìng...

那个潜艇艇长有个类似于潜望镜之类的东西.The captain of the submarine has got this periscope thing.船长使潜望镜对准方位。The captain aligned the periscope on the bearing.现在, 他一面从潜望镜里观察,一面用精干踏实的口吻说话.Now, peering through the periscope he remarked in busi...