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
to ask Dad to sign as a guarantor.
请爸爸当担保人为我签字。
They are used to seeing him every day.
他们习惯了每天见到他。
The officer in the control tower was very angry when he heard the news,
控制塔上的官员得知这一消息后，非常气愤，