If one item or share of something is allocated to a particular person or for a particular purpose, it is given to that person or used for that purpose.
例句
Tickets are limited and will be allocated to those who apply first...票数有限,先申请者先得。The 1985 federal budget allocated $7.3 billion for development programmes...1985年的联邦预算将73亿美元拨给了开发项目。