最新的技术变革包括自动化基础设施测试(无论是单元测试、集成测试或系统级测试)，给开发人员提供了一张“安全网”，以便放心的对运维进行变更。
A final technical change involves the automation of infrastructure tests (either at unit, integration or system level) which provides a safety net for developers to contribute changes to ops.
赫敏放心地舒了口气，从隐形衣下面钻了出来，坐在一张摇摇晃晃的椅子上。
Hermione moaned with relief, wove out from under the Cloak, and sat down on a wobble-legged chair.
他们告诉我们，他们对新专辑有些不放心，因为上一个首张专辑太成功了。
They tell us that they were a bit apprehensive about their new album because their debut album was such a huge success.
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