而这个新级别的主舰将在2019年之后才购买。
The lead ship in this new class will not be purchased until 2019.
COC是一个相对较新级别的聚合物，与聚丙烯和聚乙烯相比。
COC is a relatively new class of polymers when compared to polypropylene and polyethylene.
可以实现新级别的动态行为，因为ESB能够为请求程序和提供程序之间的每个交互实时执行策略。
New levels of dynamic behavior can be achieved, because the ESB can enforce policy in real time for each interaction between requester and provider.
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