Chadless perforation
[电] 无屑凿孔
🧩 词语组成解析
[计] 半穿孔
perforation
[[ˌpə:fə'reiʃən]]
n. 穿孔, 孔眼, 贯穿, 贯通\\n[化] 穿透
🗣️ 情景例句
Bon Voyage!
旅途愉快！
It was a real pleasure for me to do it.
我很乐意这样做。
I've just arrived myself so forgive me if I don't seem to know what's going on.
我自己也刚到家。所以，如果我不了解情况的话，那么请你原谅。