Last week, for example, Postmaster General Pat Donahoe announced plans to stop mail delivery on Saturdays, a move he says could save $3 billion annually. 每年节省
Air pollution costs the global economy more than $5 trillion annually in welfare costs, with the most serious 26 occurring in the developing world. 每年花费
The school trip has become an annual event. 学校组织的旅行成了一年一度的活动。
The exhibition is held annually.
这个展览每年举行一次。