Barrier penetration
[化] 势垒穿透
🧩 词语组成解析
penetration
[,pɛnɪ'treʃən]
n. 渗透;穿透;[军]突破;洞察力;
🗣️ 情景例句
I understand, Grandpa.
我能体会你， 爷爷。
I'm an American by birth.
我是土生土长的美国人。
Wu dropped his stick! He stopped to get it and of course fell behind.
吴的接力棒掉地了！他停下捡棒，当然就落后了。