Pre-amp
[化] 前置放大器
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
n. 安培\\n[化] 腺苷酸; 腺苷一磷酸
🗣️ 情景例句
Let us try it!
让我们试试吧！
To gain teaches how to spend.
量入为出。
Which one is cheap? Which one is dear?
哪一支便宜？哪一支贵？