While infants laugh up to 300 times a day, that figure falls to an average of 6 laughs a day for teenagers and only 2.5 daily chuckles for those more than 60 years old, the survey found.
调查发现，婴儿一天能笑300次，十几岁的孩子平均一天笑6次，而年龄超过60岁的人一天只笑2.5次。
In experiments on rice-groundnut rotation at Bhubaneswar, as an average of two years, increase in fertilizer levels did not effect yield of rice (Table 6.).
在布巴内斯瓦尔的稻-花生轮作试验中，二年平均来看，提高施肥水平并不影响水稻产量(表6)。
On an average of two years, ZAU 6 and Danerbarley had the largest and lowest grain weight among 10 cultivars, respectively.
两年平均，浙农大6号和单二大麦分别为千粒重最高和最低的品种；
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