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His arm described an arc in the air.
他的手臂在空中划出一道弧形。
youdao
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The air plasma arc cutting technology is worthy to popularize a new thermal cutting technology.
空气等离子弧切割工艺是值得推广的热切割新技术。
youdao
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The air plasma arc cutting technology is worthy to popularize a new thermal cutting technology.
空气等离子弧切割工艺是值得推广的热切割新技术。
youdao