关门按钮
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door close button 关门按钮
close door button
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Is it true that the elevator close-door button is completely useless?
电梯的关门按钮真的是毫无用处的吗？
youdao
Clarke have popularized the idea of a space elevator, there are still a few kinks that need to be worked out before we start having folks hit the "door close" button for a 100, 000 kilometer (62, 000 miles) ride.
ENGADGET: Space elevator ride may kill humans due to ionizing radiation
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