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特点：与 GELU 类似，是一种平滑版 ReLU。
，更多细节参见91视频
Nasa administrator Jared Isaacman told a media briefing that he was adding an extra step to the Artemis programme because he did not want such long gaps between launches.
NASA announces major overhaul of Artemis moon program amid safety concerns, delays: "We've got to get back to basics"