The name comes from the first six keys on the upper left row of letters on the keyboard.
这个名字是从键盘最上面一排左边的头六个键得来的。
The goal was to press the space bar on a keyboard whenever they saw a picture twice in a row.
他们要完成的任务就是在看见某张图片第二次出现时按下空格键。
Good keyboard layout should help users by putting most frequently used characters in the home row, and the rest in the upper and lower rows.
好的键盘布局应当通过把最常使用的字符放在基准键位上，其他放在上方或下方键位上来方便用户。
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