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It's also important that you understand how the virtual function table works, so you understand the extra steps that can decrease performance that take place when you call a virtual function (each object has a virtual function table pointer hidden from you in its structure data , and to call a virtual function, you need to follow that pointer to the table, and then jump to the function pointer contained within, which can hurt caching).

理解虚函数表是如何工作的也同样重要，这样你就能够理解当你调用虚函数时需要的额外步骤，这些步骤会降低性能(每个对象都有一个隐藏的虚函数表指针，这样调用一个虚函数，你需要根据这个指针找到那个函数表，然后跳到它所包含的函数指针所指的函数里，这会降低cache的效果)。

I brought some extra money just in case you don't have enough.

我带着额外的钱以防你的钱不够。

Then for years, people used to eat a few of the green Kaffa beans when they were in the mountains and needed extra energy or stimulation.

许多年以后，当人们在山中并需要额外的能量或刺激的时候，人们经常吃一些绿色的 Kaffa 豆。

And this is done deliberately, we can see this through the extra slowcare Kame takes to demonstrating the opening and closing of the fan.

这个做得非常的刻意，我们可以通过 KAME 在表演打开和合上扇子时额外慢速的动作看出来。

And the business is more complicated: you need to offer meals and refreshments (even if you sell them to passengers), provide on-board entertainment, have extra crew on board and keep crew overseas.

而且业务也更复杂：你得供应食物和饮料，在飞机上提供娱乐，拥有更多机组人员以及雇用海外机组人员。

Then they charge extra for another surgery, Conductive Keratoplasty, to reduce the need for reading glasses!

然后，他们再收取额外费用，手术，导电性角膜移植，以减少需要老花镜！

A: Can I have extra ketchup?

我可以多要一些番茄酱吗？

Can you give me some extra ketchup packets?

你能多给我拿一些番茄酱包吗？

Terry: Mike, I don't know what to do. This guy wants extra ketchup.

Mike，我不知道该怎么办，这人想要多要番茄酱。

For example, a certain keypunch operator complained of having to stay overtime to punch extra cards.

例如某一个 keypunch 运算符投诉的逾时工作留下来打额外的卡。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了