If the nine individually listed countries (excluding those characterized as “All Others”) are ranked from highest to lowest by number of departures in 1990, how many countries ranked lower in 2001 than in 1990?_____
我的答案:
If the nine individually listed countries (excluding those characterized as “All Others”) are ranked from highest to lowest by number of departures in 1990, how many countries ranked lower in 2001 than in 1990?_____