Serum-free culture
[化] 无血清培养
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
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
We need to promote light industry in this town.
我们需要推动这个城市的轻工业发展。
Went on to get his master's degree from harvard.
然后在哈佛大学取得了学士学位。
I often fish for hours without catching anything.
我经常一钓数小时却一无所获，