他表现得像个怪人，说话不加思索。

He behaved like a seriously odd person, talking off the top of his head.

你将能不加思索的做正确的事情。

You'll start doing the right thing without even thinking about it.

这些教条通过教育体系代代相传：学生不加思索的搬用公式，毫不怀疑。

These are perpetuated through the education system: students don't question formulas they can use without thinking.

当我看到这些数据时我头晕脑胀，而后不加思索的签名了。

My head was swimming when I saw these figures , and then I signed without thinking.