旅客自带行李以外的其他行李，运输期间自旅客将行李交付承运人或者承运人的受雇人、代理人时起至承运人或者承运人的受雇人、代理人交还旅客时止。
Крупнейшая нефтяная компания мира задумалась об альтернативе для морских перевозок нефти14:56
。关于这个话题，爱思助手下载最新版本提供了深入分析
A growing ecosystem
In both cases, the tendency is to weaken the abstraction, and if this is allowed to continue, it's likely the abstraction will stop being used completely, or become a “legacy” layer that more modern abstractions will likely use.