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1. China's Huawei launched its Harmony operating system for smartphones on Wednesday, looking to recover from U.S. sanctions that have hobbled its mobile business.
recover from 恢复
It can take many years to recover from the death of a loved one.
从失去亲人的痛苦中恢复过来可能要花很多年。
2. Huawei will start rolling out Harmony on selected smartphone models, offering users the chance to switch from the current operating system that's based on Google's Android platform.
roll out 推出
Amazon also plans to roll out some new software features.
此外，亚马逊还计划推出更多新软件特性。
