The depth of the tread makes the I-Beamwell suited to loose and medium-packed conditions with deep areas of loose dirt around the edges of the track.
深度使胎面的I -梁适合松散和中型包装条件，深领域的松散的泥土的边缘附近的轨道。
2
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。
3
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.