One unit of alcohol is equal to half a pint of beer. 一单位酒精等于半品脱啤酒。
用作形容词 (adj.)
In American, seven out of ten mothers have paid jobs, either full time or part time. These include more than half of women with babies or young children. 在美国，有十分之七的妈妈有全职或兼职的带薪工作，其中超过一半妇女有婴儿或很小的小孩。
He found that IQs increased among children aged between five and 10 over the 28-year-period, at the rate of up to half a point a year. 他认为这是由于家庭环境所致，越来越多的家长乐于在孩子小的时候从事促进大脑发育的活动。
