在肯尼亚进行的一项2000人的调查显示，采用镭射刀进行绝育手术，同时辅助以破伤风针剂和抗生素可以立刻减少70%的并发症。
A study in Kenya in 2000 showed that using sterile razors, anti-tetanus shots and antibiotics cut the risk of immediate complications by 70%.
机器人有着更加精准的解剖刀或镭射刀。
Robots are more precise with a scalpel or laser than a person could ever be.
外星人入侵地球，地球勇士用镭射枪回击，这曾是科幻电影的标配情节。
It used to be the default plot for space sci-fi movies–aliens invading Earth and soldiers shooting them with laser guns.
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