With the deaf it's especially good to have increased peripheral vision. If you cannot hear a car approaching from the side, it'd be advantageous to actually see it.

拥有较强的周边视力对聋人来说尤其有用，如果有只猫正从你的侧面走来，你听不见它的声音，却能看见它，这岂不是更好。

youdao

For example, say that you cannot afford to have large buffer pools due to memory constraints on the test system and would like to configure the size the same without actually having them in reality.

例如，假设由于测试系统上的内存约束，您无法获得大型的缓冲池，并且希望将大小配置得相同，实际上却不是真正有这么大。

youdao

Floating point and decimal Numbers are not nearly as well-behaved as integers, and you cannot assume that floating point calculations that "should" have integer or exact results actually do.

浮点数和小数不象整数一样“循规蹈矩”，不能假定浮点计算一定产生整型或精确的结果，虽然它们的确“应该”那样做。

youdao

These containers work because, although you can examine their contents if you have the right key, you cannot actually take the contents out to copy them.

ECONOMIST: Digital rights and wrongs