Also, the tubers can be left underground for up to three years, so if drought kills a corn or bean crop, the farmer's family can still fend off starvation.
而且,木薯的块茎可以被埋在地下,三年都不会腐烂,如果干旱使玉米或豆类作物绝收,农民们依然可以依靠木薯熬过饥荒。
About a fifth of each annual watermelon crop is left in the field because of surface blemishes or because they are misshapen.
大约每五年西瓜作物会残留在地理因为他们表面瑕疵或者畸形。
As a result, world importers are left with the United States as essentially the only major source of soybeans until the 2010 South American crop becomes available around March.
其结果是在2010年度南美作物在三月份上市前,全球的进口商基本上只能把美国当作唯一的大豆主要来源。
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