The presentation is almost ready, it just needs a little more tweaking to make it perfect.

演讲几乎已经准备就绪，只是需要稍微调整一下就完美了。

I thought his "culture" needed some tweaking.

我认为他的“文化”需要调整。

Once you're finished tweaking, reboot the machine.

一旦您完成调整，重新引导机器。

Some are tweaking Linux to make their own flavours.

一些制造商通过更改Linux的代码来做出自己的风格。

Did you spend three hours tweaking the font of a heading?

您是否花了3小时的时间来调整标题的字体？

When it's off target or needs tweaking or even an overhaul?

当目标已经偏离或需要小改，甚至大修？