For example, after you've run for 3 km, enjoy your favourite ice-cream.

例如，在你跑了3公里后，享受你最喜欢的冰淇淋吧。

youdao

In the next three years, China plans to build 30 airports and 3, 000 km of railways.

未来三年，中国计划修建30个机场和3000公里铁路。

youdao

Each tower serves an area of approximately 3 sq km.

每个基站的服务范围大概是3平方公里。

youdao

That year a Shell-Texaco venture will begin producing natural gas from the 3-km-by-15-km Malampaya field 750 to 1, 150 meters below sea level.

CNN: Up from the Ocean

The final stages of cleaning the 5.3 km-long track are underway.

FORBES: India

Riding on cutting-edge technologies such as flex oDSP, super SD-FEC, and flex modulation format, this field trial achieved a record-breaking transmission distance of 1, 500 km using a super-channel PDM-16QAM-based high spectral efficiency solution, and a second record-breaking transmission distance of 3, 325 km using a super-channel Nyquist PDM-QPSK-based ultra-long-haul solution.

ENGADGET: Huawei tests 2Tbps data transmission over Vodafone's German network, calls it a 'first'