无论运输蔬菜、取用自来水或电力供应，在非洲几乎所有东西都比所需的更慢一点，没有保障或者价格高的离谱。
WHETHER it is taking vegetables to market, getting water from a tap or turning on the lights, almost everything is slower, less reliable or more expensive in Africa than it needs to be.
“这能够保障新鲜蔬菜的及时供应，便于维和战士们及时补充维生素。”侯辉仟说。
It provides a good supply of fresh veggies and vitamin to our peacekeepers, Hou said.
预防蔬菜的硝酸盐和亚硝酸盐污染对于保障人体健康具有重要意义。
Preventing the nitrate and nitrite pollution of vegetable have an important value to ensure the public health.
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