... main memory protection 主存储器保护 main messenger主导电索 main metacentre 主稳心 ...
权威例句
1.
Ideally Facebook hoped, they would use Messenger instead of the main SMS on their phones.
FORBES: Facebook Messenger Takes On SMS, With No Account Needed
2.
The Messenger app was a separate app from the main Facebook app but allowed a focus just on messages, for people who send messages on their phones constantly.
FORBES: Facebook Messenger Takes On SMS, With No Account Needed