Researchers realised that a tunable laser beam might be useful in surgery.研究人员意识到，可调谐激光束也许可以用在外科手术中。Alexandrite laser is one of the superior tunable solid - lasers.紫翠宝石激光器是迄今为止较好的固体可调谐激光器之一.The dielectric tunable behavio...
快点走的好处在于，你可以早点到达那里。The advantage in going faster is that you get there quicker.“快点啦，格雷丝，”他催促道，“别等了。快点。”"Come on, Grace," he was urging her, "don't wait, hurry up."他走到我跟前说：“快点，约翰。”He came up to me and said: "Come on,...