She knew, though, that the lack of clean water was a life-and-death problem in sub-Saharan rural villages.
但是,她知道,缺乏纯净水是撒哈拉沙漠以南农村生死攸关的难题。
And every year, faced with the life-or-death problem of choosing a new home, honey bees stake everything on a process that includes collective fact-finding, vigorous debate, and consensus building.
每年,为了选择一个新家,蜜蜂进行集体实况调查、激烈的争辩、达成共识,为此需要赌上生死。
Confronted with such a vital problem of life and death, he looked as cool as a cucumber.
面对着这样重大的生死问题,他的神态却异常冷静。
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