When pressing a physical button on the glasses.
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Normalization strategies:
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替代供應在量上目前仍然能頂上，但支撐它的每一個環節都在承受更大的壓力——委內瑞拉渠道被切斷，伊朗捲入戰火，俄羅斯被制裁的廣度和力度正在快速升級。折扣紅利還在，但獲取它的代價，正在以肉眼可見的速度累積。
Note that the plot keeps dipping below the 2-good line over and over again. And there are some really nice approximations in there! The first arrow points to 22 / 7 ≈ 3.143 (s ≈ 0.009). The second arrow points to an even better one: 355 / 113 ≈ 3.141593 (s ≈ 0.00003). What’s up with that?，推荐阅读PDF资料获取更多信息