this and that 这和那 ; 各类杂项设置 ; 又是这个
This and that different 这个和那个不同
talk about this and that 比喻说话乱扯一气
Say This And That 说这说那
Says this and that 说三道四
Miss This And That 丢三落四
put this and that together 根据现有事实得出结论 ; 把各种事实凑合起来
'This' and 'that' are demonstrative pronouns.
this和that是指示代词。
"And what are you doing now?"—"Oh this and that."
“那么你目前在做什么?”—“哦,各种事情。”
Larry and Andy had drifted from place to place, working at this and that.
拉里和安迪四处漂泊,干了各种各样的活。
> What exactly is the difference with this system that we have here of compiling and say another compiler for one like the C++?
>在这个系统上编译,跟在我们这编译有什么不同吗?,也就是说,有没有其他的编译器供C++等语言使用?
Then, to find the meaning of b, we take one derivative of this, dx/dt, that's velocity as a function of time, and if you took the derivative of this guy, you will find as at+b. That's the velocity of the object.
接下来,为了弄清b的含义,我们取它的一阶导数,dx/dt,得到速度作为时间的函数,如果你对它求导的话,你会得到at+b,这就是物体的速度
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