/bu:st ||; bust/verb [T] to increase sth in number, value or strength 增加；增强: If we lower the price, that should boost sales.我们如降低价钱，应能增加销量。The good exam result boosted her confidence.考试成绩理想增强了她的信心。
boost²
/bu:st ||; bust/noun [C] something that encourages people; an increase 令人鼓舞的事物；增加: The fall in the value of the pound has led to a boost in exports.英镑贬值造成出口增加。The president's visit gave a boost to the soldiers' morale.总统到访，激励了军中士气。