Secon
abbr. secondary electron conduction orthicon 次级电子导电正析像管
🗣️ 情景例句
Really, Mr. Marchetta?
真的吗，Marchetta先生？
No one is wise at all times.
人总有一时之失。
This knocks the turtle down several feet.
这一下子把海龟撞下去好几英尺。