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单词 heat ray
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The townspeople try to communicate with the Martians with a white flag, but are attacked by a heat ray.

镇上的居民试图用白旗与火星人交流,但遭到了热射线的攻击。

趣味化学实验:Periodic Videos

It was used in this piece of apparatus to shine in an infrared laser that’s like a heat ray at one frequency and it came out as twice the frequency.

它被用在这台设备中,以一种频率像热射线一样的红外激光照射,它以两倍的频率发出。

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