Free ammonia
[医] 氨气
🧩 词语组成解析
free
[fri]
adj. 自由的;免费的;免税的;空闲的;
adv. 免费地;自由地，无拘束地;一帆风顺地;
vt. 免除;释放;使自由;解救;
ammonia
[ə'məunjə]
n. 氨;氨水;氨气;
🗣️ 情景例句
But at my age,
但是，像我这般年纪，
Where'd you get it?
你在哪里买的？
So it became known as the gold rush.
成为广大为人知的“淘金热”。