Sanginga notes that about 440 lbs. (200 kg) of nitrogen fertilizer is generally needed to grow five tons (5, 000 kg) of maize, but the average African farmer can afford only 8 lbs. of fertilizer.

桑锦格指出，一般情况下生产五吨（5000kg)玉米大约需要440lbs.(200kg)氮肥，而非洲农民只能担负8lbs.的化肥。

youdao

We are thinking about buying 5 tons of groundnuts.

我们正在考虑购买5吨花生。

youdao

We're thinking about ordering 5 tons of groundnuts.

我们正在考虑订购5吨花生。

youdao

"Japan every year throws away about 20 million tons of food, worldwide food aid is only about 8.5 million tons.

VOA: standard.2009.09.09

The average ship burns about 5 metric tons of fuel each day in port.

FORBES: Plug-in-Power Set for Massive Growth at Major Ports

The Japanese government has estimated that the tsunami swept about 5 million tons of wreckage out to sea.

MSN: First bit of Japan tsunami debris turns up in Hawaii

That leaves as much as about 1.5 million tons of debris afloat, U.S. officials estimate.

WSJ: Pilgrims Flock to Tsunami Relic at Agate Beach in Oregon