The laser, with its beam of strong light, can drill a hole in a diamond, and yet can be so well controlled that it can be used in delicate eye operations.
凭着本身强烈的光束，激光可在钻石上钻一个洞，而且可以被很好地控制，因此能用于精密的眼部手术。
The laser, with its beam of strong light, can drill a hole in a diamond, and yet can be so well controlled that it can be used in delicate eye operations.
激光有强烈的光束，可以在钻石上钻洞，而且可以被很好地控制，用于精密的眼部手术。
B. Hard as a diamond is, it is quite easy to drill a hole in it with a laser.
尽管钻石很硬，但是用激光给它打空还是很容易的。
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