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
Tell me about your book.
谈谈你的书吧。
Never be weary of well doing.
行善莫厌烦。
Education in the wilderness is not a matter of monetary means.
荒凉地区的教育不是钱的问题，