At present the world situation is complicated and changeable.
当今的世界纷繁复杂，变化多端。
Facing all complicated and changeable applications, we advocate setting up the information system centered on data.
面对复杂多变的应用，我们提倡建立以数据为中心的信息系统。
Chaos and support vector machine theory has opened up a new route to study complicated and changeable non-linear hydrology time series.
混沌和支持向量机理论为研究复杂多变的非线性水文时间序列开辟了新的途径。
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