On demand
US /ɒn dɪˈmænd/
UK /ɒn dɪˈmɑːnd/
短语
按需, 应要求
at any time that someone wants or needs something
示例:
•
The service provides movies on demand.
该服务提供点播电影。
•
You can get technical support on demand.
您可以获得按需技术支持。