Even with all the facilities ready, ample preparations should be done before the presentation to ensure that nothing goes wrong even when the PC crashes and the projection system fails to work.
即使准备好所有设施，在演讲前充分的准备能够保证即使当电脑崩溃和投影系统无法工作时，也不会出错。
Next time a friend crashes their Windows PC, tell them all about Ubuntu and how to install it, they'll thank you.
下次当朋友的Windows操作系统死掉的时候，给他们讲讲Ubuntu的一切，包括如何安装Ubuntu，他们会感激你的。
Due to insecure Internet browsing your PC can easily get infected with viruses, worms, and trojans without your knowledge, and that can lead to system slowdown, freezes, and crashes.
由于不安全的Internet浏览您的电脑可以很容易地获得感染了病毒，蠕虫和木马您不知情的情况下，这可能导致系统减速，冻结和崩溃。
Due to insecure Internet browsing your PC can easily get infected with viruses, worms and trojans without your knowledge, and that can lead to system slowdown, freezes and crashes.
由于不安全的Internet浏览您的电脑可以很容易地获得感染病毒，蠕虫和特洛伊木马您不知情的情况下，这可能导致系统减速，冻结和崩溃。
Registry Reviver is an advanced registry cleaner that cleans, repairs and optimizes your PC to minimize seizures and crashes.
注册表Reviver是一种先进的注册表清洁剂清洗，维修和优化您的电脑，以减少发作和崩溃。
Registry Reviver is an advanced registry cleaner that cleans, repairs and optimizes your PC to minimize seizures and crashes.
注册表Reviver是一种先进的注册表清洁剂清洗，维修和优化您的电脑，以减少发作和崩溃。
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