澳大利亚和美国加利福尼亚州签署了一项谅解备忘录，共同应对气候变化，重点关注清洁能源和技术、贸易以及基于自然的解决方案。
英文原文如下：
Australia, California sign wide ranging climate cooperation agreement
Australia and the US state of California have signed an MoU to work together to combat climate change, focussing on clean energy and tech, trade, and nature-based solutions.
