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
Please wait for me. I won't be long.
清等等我，就一会儿。
Is your factory any different from other plastics factories?
你们工厂和其他塑胶工厂有何差别呢？
Bluebird, the car he was driving, had been specially built for him.
他驾驶的“蓝鸟”牌汽车是专门为他制造的。