The letter had clearly been written in haste.

这封信明显是在匆忙中写的。

She dressed in haste, though with great difficulty, being nervous and excited.

尽管费了很大的劲，她还是匆匆忙忙地穿好衣服，显得既紧张又兴奋。

You should not act in haste.

不宜操之过急。

Bring the doctor in haste.

快把医生请来。

Do it in haste but with caution.

赶快做这件事情但是要小心。