It should be short and snappy, and no more than about 40 characters long (the width of a single column of text on a standard Economist page).
要求简短而上口,并且不能超过40个字(标准《经济学人》页面一栏内容所占宽度)。
2
It should be short and snappy, and no more than about 30 characters long (the width of a single column of text on a standard Economist page, including Spaces).