十天的英文：
dekad

"If I use two of my pay vacation days now, I 'll have ten day off in a row. "
如果我用掉两天的年假,就有十天连假了

We had ten day's travel by train.
我们乘火车旅行了十天。

Ahead of us lay ten days of intensive training.
我们当前有十天的强化训练.

Another ten days, I think.
我想，再十天吧。

We'll Be leaving in ten days at the outside.
最多十天以后我们就出发

I've had a very bad cough for ten days now.
我重感冒到现在已经十天了。

The bodily rising of Jesus into heaven on the 40th day after his Resurrection.
耶稣在复活后的第四十天肉体升天。

Ten days should be a big enough leeway to allow for delays.
把耽搁考虑在内，增加十天时间是绰绰有余的了。

The journey will take around ten days.
这次旅行大约要用十天时间。

The time needed for the eggs to incubate is nine or ten days.
蛋孵化需要的时间是九到十天。