1·I think the channel semantics (lose ownership of a message when it is sent) is a sweet spot in the trade-off among efficiency, verification, and expressiveness.
我认为通道语义(当发送的时,消息的所有权是松散的)很好地权衡了效率,验证和可表达性。
2·The functionality and ease of use of the graphical user interface depend on the expressiveness and complexity of the underlying data model.
图形用户界面的功能与易用性是由基本数据模型的可表达性和复杂度决定的。