Arcing contacts
[电] 弧接触
🧩 词语组成解析
[机] 电弧作用
n. 联系人；联络方式；触体（contact的复数形式）
🗣️ 情景例句
do you need any help?
需要帮忙吗？
I'll pick up ticket at the airport counter.
我会在机场柜台拿机票。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。