understandable可以理解的

1) It's understandable that you're a few minutes late. The traffic is horrible today.

2) 例子: It's totally understandable that you didn't reply in time. There must have been many issues to be dealt with urgently towards the end of the construction.

    场景: 项目快竣工验收了，现场工程师需要处理的问题很多，经常没时间回复。

3) perfectly/ totally ~