Xa
abbr. 辅助放大器（Auxiliary Amplifier）
🗣️ 情景例句
Sure, but never before have we had payment in RMB.
当然可以，不过我们从来没有用过人民币付款。
It's a quarter past five.
现在是五点一刻。
I'm afraid I can't do that right now. the manager isn't here.
恐怕我现在不能退钱给你。经理不在这里。