Events can be generated by a user action, such as clicking the mouse or pressing a key; by program code; or by the system.

事件可由用户操作(如单击鼠标或按某个键)、程序代码或系统生成。

youdao

It spreads primarily by underground stems; colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a suitable area and germinate.

它主要通过地下茎传播；当根系统碎片或整个植物漂浮到一个区域并生根，或当种子漂浮到一个合适的区域并发芽时，菌落就形成了。

youdao

Few people in the Roman Republic felt their system should be, or could be, embraced by others in the mysterious ancient societies of the East.

在罗马共和国几乎没有人认为他们的系统应该，或者可能被神秘古老的东方社会文明的其他人所接受。

youdao

A "tornado outbreak" is often defined as six or more tornadoes produced by the same weather system within a day.

VOA: special.2010.05.11

Usually it's done by taking all or part of the infectious agent, and showing them to your immune system in some way.

通常它会带着全部或部分抗原介质,并以某种方式呈递给你的免疫系统

耶鲁公开课 - 生物医学工程探索课程节选

That's why I chose the NAACP. Because their method was legal change through the court system, or through action by the Congress."

VOA: standard.2010.04.16

Cancer cachexia appears to be caused by chemicals given off by the tumor or by the patient's immune system that is trying to combat the tumor.

CNN: Is the inability of cancer patients to eat a concern?

It would be nice to think the world can be governed by multilateral institutions or that the international system can be managed by 22-member summits, but history says otherwise.

FORBES: War by Committee Against Libya

Riders can pay a discounted season fee or use the Pay by Phone system to pay the charge which will be introduced across the borough gradually, starting in the West End.

BBC: West End parking fee for bikers