🧩 词语组成解析
tonic
['tɑnɪk]
n. 滋补品;奎宁水;<音>主音;<语>浊音;
adj. 滋补的;<语>声调的;<医>强直的;<音>主音的;
key
[kiː]
n. 钥匙;（打字机等的）键;关键，线索，秘诀;（音乐的）调;
vt. 键入;锁上;调节…的音调;提供线索;
vi. 使用钥匙;
adj. 关键的;主要的;
🗣️ 情景例句
Let's build a fire and cook it!
咱们去升火煮鱼。
Do you have a letter of introduction?
你有介绍信吗？
When the brothers were reunited, Hans explained how it was that he was still alive.
兄弟俩团聚之时，汉斯说明了他活下来的经过，