The View layer is thin and supplies no business logic.
视图层比较单薄，它不提供业务逻辑。
The service layer is no longer dependent on model state.
service层不再对模型状态（model state）产生任何依赖。
The last layer is to be applied uniformly, with no surface defects.
最后一层涂层应涂刷均匀一致没有任何表面缺陷。
In the Layer 2 header, there is no Time To Live (TTL) value.
在第2层的表头里并没有存活时间(ttl)的设定值。
Some people even think that there can be no fill layer.
甚至有人认为可不设填充层。
The layer of meaning: no one is perfect.
其一层意思是：没有人是十全十美的。
The layer of meaning: no one is perfect.
其一层意思是：没有人是十全十美的。
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