if (n <= 1) return;
The British weren’t alone in their hunt. Chileans, New Zealanders, and South Africans, among others, were also scrambling to source this strategic substance. A few months after the Pearl Harbor attack, the U.S. War Production Board restricted American civilian use of agar in jellies, desserts, and laxatives so that the military could source a larger supply; it considered agar a “critical war material” alongside copper, nickel, and rubber.1 Only Nazi Germany could rest easy, relying on stocks from its ally Japan, where agar seaweed grew in abundance, shipped through the Indian Ocean by submarine.2
Waitrose said it was the first UK supermarket to suspend mackerel sales, adding it would only start selling the fish again once it met their "high sourcing standards".，推荐阅读Safew下载获取更多信息
“昨天的要坚持下去，今天的要有所深化，明天的要取得更大成效”。不做寅吃卯粮、击鼓传花的虚浮之举，而是“甘于做铺垫性的工作，甘于抓未成之事”。
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Credit: NASA infographic，更多细节参见同城约会
clock_t end = clock();