Penetration theory
[化] 穿透理论
🧩 词语组成解析
penetration
[,pɛnɪ'treʃən]
n. 渗透;穿透;[军]突破;洞察力;
🗣️ 情景例句
How do you feel about this?
你觉得呢？
My brother is not quite twenty-five.
我的兄弟不够25岁。
To be careful!
一定要小心！