Borderline knock curves
[机] 边界线爆震曲线
🧩 词语组成解析
borderline
['bɔ:dəˌlain]
n. 分界线，国界线;
adj. 边界上的;边界附近的;暧昧的;不明确的;
knock
[nɑk]
n. 短促的敲打（声）;爆震声;敲击声;敲门（或窗等）声;
vi. 猛烈敲击;与某物相撞;撞到了桌子;
vt. （心）怦怦跳;把…撞击成（某种状态）;批评;
n. 曲线；弯曲状（curve的复数形式）
🗣️ 情景例句
He was in trouble with the Customs.
他在海关那里有了麻烦。
I'm afraid all my efforts were in vain.
我担心我的努力全白费了。
The Macdonalds finished supper at Macdonald's, and then bowled at the bowling alley.
麦可糖那一家在麦当劳吃过晚饭后去球馆打保龄。