Nitrogen-free agar
[医] 无氮琼脂
🧩 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;
n. 琼脂, 石花菜\\n[化] 琼脂
🗣️ 情景例句
How do you tie it?
你怎么打的？
To wave your arms
振臂，挥手
Who was second? Who was third?
谁是第二？谁是第三？