Definitions and rules are hard not just because the tools of war have changed, but because cyberspace puts them into the hands of a broader group of people.

给出定义和评判规则很难，这不仅仅是因为战争工具已经改变，还因为网络空间让这些工具落入更广泛人群手中。

youdao

The group has just issued a report, published by the Novim research organization, analyzing the use of aerosol particles to reflect shortwave solar radiation back into space.

该小组刚刚由诺文研究组织发布一项报告，报告分析了悬浮粒子的作用，即能把短波的太阳辐射反射回大气中去。

youdao

Last September, a group of computer scientists demonstrated just how easy it was to sneak malicious code into the computers of Facebook users.

去年九月，一组计算机专家证实了向“脸谱”用户的电脑植入恶意编码的“便捷性”。

youdao

Just before the meeting ended, someone threw a bomb into a group of policemen.

VOA: special.2010.05.06

The minister says that he was just trying to bring the group into the mainstream.

ECONOMIST: The Punjabi Taliban

Later that evening, just before the game began, a group of English supporters tried to break into the ground.

BBC

But just then a group of men stormed into the room and their gaze fell on a different cadaver, it was someone they knew.

BBC: Picture power: The price of war