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汉语拼音：kāi qiú

在度量空间中包含一点X的开集,是由与x的距离小于某个固定的正数的一切点组成。2.开始一场篮球比赛,由两队中锋在球场中圈跳球,都争取把球轻打给自己队的一个队员,这叫开球。

• The kick-off is at 3.

  足球比赛3点开球。

• The players eventually teed off two hours late.

  推迟两个小时之后,运动员终于开球了.

• They kicked off on time.

  他们准时开球.

• With a difficult tee shot, select a club which will keep you short of the trouble.

  开球难度较大时，选一根好使的高尔夫球杆。

• The referee told him to punt or kick the ball off the ground.

  裁判告诉他可以碰踢或定点开球。

• The referee decided which side should kick off by spinning a coin.

  裁判员以抛转硬币的方式来裁定哪一方先开球.

• The visiting team chose to kick off in the first half.

  客队在上半场选择中线开球.

• He kicked off and the football game started.

  他开球后,足球赛就开始.

• Have the two captains tossed yet ( eg to decide which team will start the match )?

  那两个队的队长掷硬币了吗 ( 如决定哪队开球 )?

• Let's meet at the clubhouse at 1:30 this afternoon and tee off at two.

  我们今天下午1:30在高尔夫球俱乐部会所会面,两点钟开球.

• Keep quiet while other players are making the tee - shot.

  当别的球手在开球时,请您保持安静.

• The referee tossed a coin to decide which team should kick off.

  裁判掷硬币决定哪个队开球.

• A player with ball in hand must play from the balk.

  拿球的选手必须从开球区开始打.

• Each half of the game begins with a kick - off.

  以开球形式开始每个半场比赛.

• Each booking is allowed to one tee time only.

  预定适用于同一队同时开球.