Hpa
abbr. 高功率放大器（high-power amplifier）
??? 情景例句
Exactly.
完全正確。
I would like to call the employment agency for a job.
我要打電話給職業介紹所代我找一份工作。
A cat's ability to survive falls is based on fact.
貓在跌落時能夠大難不死是有事實作為依據的。