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
I give thanks for being here with my family and for being well,
我感谢能在这里和家人在一起而且很健康，
Knowledge without practice makes but half an artist.
只有知识而无实践，只能造就半瓢水的艺术家。
Can you come at 2 p.m.?
您下午两点钟来行吗？