花了很长时间才把泥从他头发上洗掉。

It took a long time to wash the mud out of his hair.

《柯林斯英汉双解大词典》

在对这个问题思考了很长时间后，他想到了把时钟往前拨一个小时的办法。

After thinking about this for a long time, he finally conceived of the idea of moving the clocks forward.

youdao

奶酪间里有一架楼梯，只有从那儿才能上楼去，阁楼已经关闭了很长时间，他来了以后才把它打开作他的住处。

It could only be reached by a ladder from the cheese-loft, and had been closed up for a long time till he arrived and selected it as his retreat.

youdao