他的头被打了一下，从那以后，就有点迟钝。

He got hit on the head and he's been a bit slow since.

《柯林斯英汉双解大词典》

让别人觉得你有点迟钝，总比发现你的英语其实很糟糕要好。

It's better for others to assume you're a bit slow, rather than to realize how wretched your English is.

youdao

在测试的过程中我们碰到过几次程序崩溃，而且模拟器总是有点反应迟钝。不过总的来说，在花钱买新手机之前先体验一下新的手机操作系统是一件很有趣的事情。

We did experience a few crashes in our tests, and the emulator felt somewhat sluggish, but in all, it's fun to try out a new mobile OS before spending money on a new phone.

youdao