Pre-embryonic
[医] 胚前期的
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
🗣️ 情景例句
And you didn't have a chance to eat.
而且你什么也没有吃。
From across the room, David cast a glance at his brother.
隔着房间，大卫瞥了一下弟弟。
Mary is still writing letters. She's been writing letters all day.
马力还在写信，她写了一整天的信。