Embryo sac
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
The company has shown exceptional growth over the past two years.
过去两年中这家公司获得了很大的发展。
Tell us about your post-purchase servicing.
告诉我们有关你们售后服务的情况。
those who are worried to death, and those who are bored to death.
忧虑至死的人、无聊至死的人。