1）翻译下面的句子：
过去几年投资是中国经济的引擎，现在主要是消费在拉动中国经济。
The engine of China’s economy used to be investment in the past few years，but has turned to be consumption now.
Investment used to be the engine of China’s economy, but now it is consumption that mainly fuels/drives the economy growth.
2)造句：
2）结合自己的生活、学习、工作、兴趣等，想象在什么语境下会用到这个表达。先简要描述这个场景，再造句。
例子： 国与国之间的竞争是诸如转基因、人工智能这类前沿科技的发展动力。一旦竞争开始了，就没有回头的路。
场景 ：
The competiton between countries is one engine of the development of frontier technologies like AI and genetic modification. Once it starts, it likes a train out of the station, and there is no brake to pull.
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