abbr. PPT
misc. parts per trillion
帕米萨诺和罗梅蒂在7月29日同一天生日，这可是365分之1的小概率，考虑到闰年，可能更小；这是某种预兆吗？
In a 1-out-of-365 chance, or less considering leap year, Palmisano and Rometty share the same birthday, July 29th; is that an omen of some kind?
这个非盈利集团现在管理着6600兆瓦风能，占到其能源生产总量的百分之四，然而它仍有5.4万兆的风能项目尚在开发中。
The nonprofit group currently manages 6,600 megawatts of wind power — about 4 percent of its total generation — but has about 54,000 megawatts of wind projects in development.
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