For those uninitiated in scientific ocean drilling, the previous record was a little over 4 km.

可以告诉没有海洋科学钻探知识的人，先前的纪录是四公里过一点儿。

《柯林斯英汉双解大词典》

Searchers were practically able to get to the landing place by cars, but they had to pass 4 km on foot through marshes.

实际上，探寻者能够乘小汽车到着陆的地点，但是，他们必须步行经过4千米的沼泽。

youdao

We were 3, 000 miles (4, 800 km) apart, but I kept forgetting we weren't at the same conference table.

虽然相隔3000英里(4800公里)，但我却经常会忘了我们并非坐在同一张会议桌上。

youdao

For now, expect small but crucial steps like rebuilding rail links severed by the demarcation line along the 38th parallel, inside the demilitarized zone, a 4-km-wide no-man's-land between North and South.

CNN: ASIANOW - TIME Asia | Korea: Korea's Big Show

The state-owned Maharashtra State Road Development Corporation is set to open its much-delayed showpiece project: the 4.7 km (2.9 mile) Bandra-Worli Sealink, India's longest ocean bridge.

FORBES: Bombay's Bridge Over Troubled Traffic

In two major agreements they have demarcated practically the entire length of their 4, 300-km border.

CNN: ALLIANCES