She is good at computers.

她擅长于计算机。

youdao

I am good at computers and I can help with mails, posters and so on.

我电脑很熟练，可以帮忙发邮件，信件等等。

youdao

I have many hobbies, such as table tennis, tennis, piano... but I am good at computers, I can make pretty pictures on the computer.

我有很多兴趣爱好，比如说乒乓球，网球，钢琴…但是我最擅长计算机，我可以在电脑上制作漂亮的图画。

youdao

I'm really good at science and computers.

BBC: Robert James has been living with the HIV virus for 19 years.

Second, from an empirical perspective, the data would seem to corroborate what we already know from casual observation: The bad guys are much better at getting bad stuff onto our computers than the good guys are at keeping it off.

FORBES: Written by David Lowenstein and Risu Na

Computers are pretty good at pulling apart language.

FORBES: So Much For Mining Twitter Sentiment For Picking Stocks