Pre-embryo
n. （胎儿的）胚前期
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
🗣️ 情景例句
I always get nervous in her company.
跟她在一起，我老是紧张。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
Everything's very quiet.I'm sure there's no one at home.
毫无动静，肯定家里没有人。