Pre-drilling
n. 打超前钻眼；打井口眼
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
drilling
[['dirliŋ]]
n. 演练\\n[医] 钻
🗣️ 情景例句
Hi.
嗨！
I'll work for 5 years and then go back to school.
我会工作五年，然后会学校。
She had a bad cold.
她患了重感冒。