To discourage the buying and selling of free-travel coupons, it would be best for Bravo Airlines to restrict the use of the coupons to those who were awarded the coupons and members of their immediate families 中的”restrict the use ... to those“
在韦伯字典中,对于restrict的解释提到:
1: to prevent (someone) from doing something e.g.They say the government is trying to restrict them from speaking out. 2 : to allow (someone) to only have or do a particular thing — usually + to e.g. The doctor restricted her to a low-fat diet. [=she was only allowed to eat a low-fat diet] ? He restricts himself to one cup of coffee a day. [=he allows himself to have only one cup of coffee a day]