英语语法分析

The speedup of -O5 over -O3 is 7.33x at n=2000.

O5 在 –O3 的基础上加速的程度是 7.33x 。

Getting a speedup of 50 to 60% still seems worthwhile.

速度提高50%到60%似乎是值得的。

I need to take advantage of Pyrex variable declarations to get a speedup.

我需要利用Pyrex变量声明的优点来进行加速。