3It wasn’t the first time that nations at war turned to seaweed. During the First World War, the U.S. relied on the giant kelp seaweed (Macrocystis) to boost production of potash (a fertilizer produced in Germany), gunpowder, and acetone.
2025 年第四季度携程录得其他收入 20.38 亿元，而去年同期为支出 1.37 亿元；
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