Acid-free
adj. [化学] 无酸的
🧩 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;
🗣️ 情景例句
You'll do great. break a leg!
你会干得很棒的，祝你好运！
I'm going to try to leave by 10:00.
我争取10点以前离开。
Has he moved to his new house yet?
他已经迁进新居了吗？