Embryonic sac
[医] 胚囊
🧩 词语组成解析
sac
[sæk]
n. （动植物组织中的）囊，液囊;
abbr. 缩写 = (US) Strategic Air Command 战略空军司令部。;
🗣️ 情景例句
Can you help me for a minute, love?
亲爱的，能帮个忙吗？
Fortunately,I jumped back in time to avoid being hit.
幸好,我及时跳回来避免被撞击。
If they are not brought to the surface soon they may lose their lives.
如果不把他们尽快救到地面上来，他们就有可能丧生。