Sign changing amplifier
[计] 符号变换放大器
🧩 词语组成解析
v. 交换；兑换；改变（change的ing形式）
🗣️ 情景例句
but there's a letter here addressed to you,
这确实有一封信是寄给你的。
We're having a little get-together Friday night.
周五晚上我们有个小派对。
On arriving at the shore, the girl struggled up the cliff towards the light she had seen.
到达岸边后，姑娘朝着她看到的灯光方向挣扎着往峭壁上爬去。