她的心脏很虚弱，而且不稳定。
美国和巴基斯坦的关系一直都十分复杂而且不稳定，但是在这个时候，他们的关系则显得更加的不稳定。
Relations between Washington and Islamabad are always complex and fragile but they are particularly volatile at the moment.
但是正如那些被测试者所强调的，当收入不仅仅是低，而且不稳定也不可预测时，控制现金流更为至关重要。
But as many of the subjects emphasised, controlling the flow of cash becomes all the more critical when income is not just low, but also unpredictable and irregular.
但是乌干达的网络服务非常缓慢而且不稳定，所以问题格子与当地技术公司联系，将信息储存在地方服务器上。
But Internet service in Uganda proved slow and undependable. So Question Box teamed up with a local technology company to store information on a local server.
但是乌干达的网络服务非常缓慢而且不稳定，所以问题格子与当地技术公司联系，将信息储存在地方服务器上。
But Internet service in Uganda proved slow and undependable. So Question Box teamed up with a local technology company to store information on a local server.
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