Pre-production trial
[化] 试生产
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
🗣️ 情景例句
He prays every night before sleep.
他每晚睡觉着都祈祷。
What's the name of the cat?
这猫叫什么名字？
Sometimes people cook this food at home, but usually they go to a fish and chip shop.
人们有时在家里做这种食品，但通常还是到炸鱼和土豆片店去买。