It has untethered us from our groupings - in the office, where email has disconnected us from what the people who sit three feet away do all day, and even more significantly, at home.

它将我们从群体中解离出来——在办公室，咫尺之遥的同事也用电子邮件交流，但更为显著的是它对家庭的影响。

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Look, it has three hollow feet.

你看，它有三只空心的足。

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Sugar kelp is best harvested after one month to three months, when it has reached one to three feet in length, Mr. Smith said.

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Callahan, who has struggled in the playoffs so far, tapped into the empty net from three feet to make it 3-0.

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