Pre-testing
n. （广告业中的）预先测试
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
testing
[['testiŋ]]
n. 测试\\na. 吃力的, 试验的
🗣️ 情景例句
He's asleep.
他睡着了。
If he doesn't, will you buy one?
如果他不，你会买一个吗？
I was very glad when the boys won the relay race.
我非常高兴，男同学在接力赛中获胜。