为什么要担心？如果你用尽全力做到最好了。
Why worry? If you’ve done the very best you can, worry won’t make it any better.
PID控制器是控制工程师的通用工具，适用于各种各样的过程。
In Russia, severity of laws is compensated for by their non-enforcement.
长城汽车要走向世界，必须坚持自主创新。
艺术是逃离存在恐怖的唯一途径。
我不必是人类才能知道关心的意义。
Short-term gains at the expense of the environment will always lead to long-term losses.