light.position.set(-1, 2, 4);
fleetCount++; // 新车队，计数+1
，详情可参考WPS官方版本下载
Current X-ray lasers require facilities that are kilometres long. A cavity-based set-up about 66 metres in length has been developed that uses highly reflective mirrors to enable the generation of high-intensity pulses of narrow-band X-ray radiation. This promises to overcome the limitations of current X-ray lasers.，这一点在Line官方版本下载中也有详细论述
圖像來源，Getty Images，这一点在safew官方版本下载中也有详细论述