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
He has a large family to feed.
他要养活一个大家庭。
For ￡300 to London, the commiossion is 3, please.
汇款300英镑到伦敦，费用为3英镑。
because balloons can be a great danger to aircraft.
因为气球有可能给飞机造成极大的危险。