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19FortyFive
2026年8月26日 21:41

美国海军核潜艇建造和维护耗资数十亿美元：退役增加1亿美元以上成本

US Navy Nuclear Submarines Cost Taxpayers Billions of Dollars to Build and Maintain: Retirement Adds a $100,000,000 More In Costs

Puget Sound Naval Shipyard, Wash. (Aug. 14, 2003) -- Illustration of USS Ohio (SSGN 726) which is undergoing a conversion from a Ballistic Missile Submarine (SSBN) to a Guided Missile Submarine (SSGN) designation. Ohio has been out of service sin

19FortyFive
2026年8月26日 14:32

美国空军速度2.25马赫的F-22猛禽隐形战斗机每架成本3.5亿美元，具备对抗中国歼-20和俄罗斯苏-57的所有工具

The US Air Force’s Mach 2.25 F-22 Raptor Stealth Fighter Costs $350,000,000 Per Plane and Has All the Tools to Take on China’s J-20 and Russia’s Su-57 Felon

A 325th Fighter Wing F-22A Raptor takes off for a mission Oct. 28 at Eglin Air Force Base, Fla. A squadron of the wing's Raptors have been at Eglin since Hurricane Michael devastated Tyndall Air Force Base in 2018. (U.S. Air Force photo/Jaime Bis

Eos杂志
2026年8月6日 06:31

Fatal landslides in July 2026

Fatal landslides in July 2026

In July 2026 I recorded 48 fatal landslides causing 413 fatalities. This year continues to be atypical in terms of the temporal pattern of fatal landslides. This is my regular update for the number of fatal global landslides, focusing on July 2026. As usual, this data has been collected in line with

Larry Ferlazzo | 英语教育博客
2026年8月1日 07:21

Henrietta Lacks 今天已经 106 岁了 - 这里是教学资源

Henrietta Lacks Would Have Been 106 Years Old Today – Here Are Teaching & Learning Resources

Henrietta Lacks 出生于 106 年前的今天。您可能对《HENRIETTA LACKS Would Have Been 100 Years Old Today》感兴趣——这里有教学资源。