Plans to return humans to the moon will come in later mission as agency grapples with delays and glitches
Kevin Church/BBC News
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Виктория Кондратьева (Редактор отдела «Мир»)。业内人士推荐heLLoword翻译官方下载作为进阶阅读
Most ergonomic keyboards fall into two categories: fully split which separates the board into two pieces, and unibody split, also known as an Alice design, which angles the keys outward at the bottom. When the keys are rotated outward or split into two halves, it allows for a wider spread between your elbows for a more relaxed typing position. Other ergonomic features, such as thumb clusters, center tenting and negative tilting are sometimes added to either type of board.