As costs fell, memory size grew.

随着成本下降，内存容量增加。

This mechanism allows programs to have flexible memory sizes, called dynamic memory allocation, that appear to be continuous to them.

这种机制允许程序拥有灵活的内存大小， 称为动态内存分配，这对它们来说似乎是连续的。

So, computer scientists and engineers had to come up with clever tricks to render graphics until memory sizes caught up to our pixelicious ambitions.

因此，计算机科学家和工程师不得不想出巧妙的技巧来渲染图形，直到内存大小达到我们像素化的目标。