请问,这道例句中的 clear 是否错误?应该是 cleared 吗?In order to have a pleasant journey, you'd better have clear information about the weather, bring proper clothes, a camera, some common medicine and so on.
句子结构分析,句子翻译: At present rates of demand, the world has enough oil in known and economically viable reserves to last for more than 40 years, enough gas for more than 60 years and enough coal for more than 230 years.