It is translated into Chinese as "現在為什麼C ++使用了更快的語言（Go）？"。
For me, it seems not close. I feel its Chinese translation should be "現在有更快的語言 (Go)，為什麼還要用C++?" Or, I feel in English, it's close to "Now, since there is faster language (Go)， why is C++ still used?"
Could anyone rewrite this sentence into simpler English or translate it into Chinese?
as a native chinese,I prefere your translation is correct.
Your translation seems fine. Here's my try at translating this sentence into Chinese:
Why is C++ used at all now that a faster language (Go) has been created?
鉴于现在有更快的语言，为什么还要用C++?
The original English sentence should probably have been stated similarly to how we are translating this in Chinese, where we mention the Go programming language first:
Now that we have a faster language (Go), why is C++ used at all?
This way the context of the question "why is C++ used at all?" is clearly given first.
现在已经开发出了更快的语言Go, 为什么还要使用C++.
Because Go is not developed for system level usage, it is not supposed to replace C++.
Rust is the one. Use Rust.
