1. It used to be three kilometres but most people wanted to do a bit more than that so we lengthened it to five kilometres—we now go round the lake twice and that adds an extra two kilometres. 以前是3公里，但大多数人想多逛一下，所以我们把路程延长到5公里——现在我们绕湖两圈，这就比以前增加了2公里。
2. The afternoon shadows lengthened. 下午影子渐渐变长了。
3. The shadows lengthened as the sun went down. 随着太阳西下，影子越拉越长。
4. The shadows lengthened with the approach of sunset. 随着太阳西沉，影子越来越长。
5. He lengthened his stride to keep up with his father. 他迈开大步跟上他父亲。
