垂直农业 (1)
Dickson Despommier
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科学60秒:智能手机的妙用
Smart phones can provide music, movie times, bus schedules. They can even make phone calls! And now, they might help ____1____ fuel use while driving. That is, if enough are used in a system call...
请旧车和分心驾驶勿上路(1)
Hint: Ray LaHood Car Allowance Rebate SystemThis week in Washington, Transportation Secretary Ray LaHood announced plans for a "distracted driving summit" in September. Transportation and law ...
法国罢工越闹越凶(1)
那怕是对于罢工不断的法国,这星期也可以算是热闹得很...Even for strike-prone France, this has been a busy week. On Tuesday, teachers, postal workers and fire fighters poured into the streets protes...
发展中国家孕妇需要补充维他命(1)
科学家发现,孕妇补充复合维他命可以有效降低产生低重婴儿的几率A recent study in Tanzania found that when pregnant women took vitamins every day, fewer babies were born too small. Babies that weigh...