常見例句雙語例句The transmission originated from a communications port in the observation deck itself.傳輸源是在了望甲板的通信站上。An observation port is arranged in the outer layer coiling and cutting mechanism for checking coiling and cutting effects in real time;外層卷削機(jī)搆中設(shè)有觀察孔，可以實(shí)時查看卷削傚果；ip.com 返回 observation port