手机可以完全锁定，只能接听来电，不能做任何其他与手机等。
Phone can be locked completely, such that one can only answer incoming calls and can't do anything else with phone.
尤其是有一两千万行数据的时候，每次修改模式、往数据库中添加索引都会数小时完全锁定数据库。
In particular, making schema changes or adding indexes to a database with more than 10-20 million rows completely locks the database for hours at a time.
HTTP协议设计为在开始发送请求时，请求发送所使用的连接在响应完全发回之前都几乎完全锁定。
The HTTP protocol was designed such that when a request begins to be sent, the connection that request is being sent on is virtually locked until the response is sent back in its entirety.
应用推荐