Backward-wave tube
[电] 回波管
🧩 词语组成解析
wave
[wev]
n. 波浪，波动;挥手;涌现的人（或事物）;汹涌的行动（或思想）态势;
vi. 摇摆，起伏;
vt.& vi. （一端固定地）飘扬;挥手指引;挥动…示意;略呈波形;
vt. 挥手表示;挥舞;使…略呈波形;烫（发）;
🗣️ 情景例句
You're very lucky to have a caring family.
你很幸运有一个温馨的家庭。
I would like to call an eletrician to come this afternoon.
我要叫一个电器师傅今天下午来。
'A new play is coming to The Globe soon,' I said.
“一出新剧要来‘环球剧场’上演了，”我说，