The afternoon shadows lengthened.

下午影子渐渐变长了。

The shadows lengthened as the sun went down.

随着太阳西下，影子越拉越长。

The shadows lengthened with the approach of sunset.

随着太阳西沉，影子越来越长。

He lengthened his stride to keep up with his father.

他迈开大步跟上他父亲。

Vacations have lengthened and the work week has shortened.

假期延长了，工作周变短了。