Question

一小段英语短文的翻译---高手进---在线等

There is also some evidence to suggest that laughter helps the body’s immune system, that is, the system which fights infection. In an experiment, one group of students watched a funny video while another group served as the control group-in other words, a group with which to compare the first group. Doctors checked the blood of the students in both groups and found that the people in the group that watched the video had an increase in the activity of their while blood cells, that is, the cells which fight infection.
请标准翻译，谢谢

Answer 1

There is also some evidence to suggest that laughter helps the body’s immune system, that is, the system which fights infection.
——还有一些迹象间接表明笑声促进身体的免疫系统， 即抵御感染的系统。
In an experiment, one group of students watched a funny video while another group served as the control group-in other words, a group with which to compare the first group.
——实验中，一组学生看好笑的视频，另一组则作为控制组进行对照，换言之，就是与第一组进行比较的一组。
Doctors checked the blood of the students in both groups and found that the people in the group that watched the video had an increase in the activity of their while blood cells, that is, the cells which fight infection.
——医生检查两组学生的血液，发现看视频的那一组白血球的活跃性，即抵御感染的血细胞，有所增加。

Answer 2

有些迹象表明笑对人体免疫系统有帮助，比如说对抗传染病的系统，一个看搞笑视频视频的小组和另一个不看的小组相比。医生检查了两个小组的血液，并发现看搞笑视频小组的学生血液中白细胞增多，也就是说，对抗传染病的细胞增多。

Answer 3

也有一些证据表明，笑有助于人体的免疫系统，这是系统，抗感染。在实验中，一组学生看了一个有趣的视频，而另一组作为对照，group-in换句话说，一组，比较第一组。医生检查了血液的两组学生发现，一群人在观看视频已增加他们的活动而血细胞，这是抵抗传染的细胞。

Answer 4

有证据表明，大笑帮助人体免疫系统，也就是说，帮助抵抗感染。在一次实验中，一群学生观看一部可笑的录像而另一群学生则作为对照组，也就是用来和他们做比较。医生检查了两组学生的血液，发现看录像的那组的白血球细胞（用来对抗感染的细胞）活动加剧。