Xa
abbr. 辅助放大器（Auxiliary Amplifier）
🗣️ 情景例句
I'm wiped out by the time I get off work.
下班时，我都累趴下了。
I've got no place to go.
天要亡我！
The editor at once sent the journalist a fax instructing him find out the exact number of steps and the height of the wall.
”编辑立即给那位记者发去传真，要求他核实一下台阶的确切数字和围墙的高度。