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
I'm exhausted. I had to work until 2 o'clock this morning.
我累死了。我一直得干到今天早上2:00。
How often did I tell you to take your time?
我告诉你多少次要慢慢来?
We are going to have the final examination next week.
我们下周举行期末考试。