Foto
abbr. 张紧振子的强制振动（Forced Oscillation of a Tightening Oscillator）
🗣️ 情景例句
I know who you are.
我知道你是谁。
They're calling your flight now.You barely have time to make it.
他们正在定航班。你刚刚有时间做。
Oh, all right!
那么，好吧！