Let's toss a coin to determine who serves first.

丢铜板决定谁先发球。

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Before dinner, the hostess usually serves guests first and herself last.

晚饭前，女主人通常先招待客人，自己最后才用餐。

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In China, a host usually serves a visiting guest a cup of tea first when he enters his house.

在中国，当来访的客人进屋时，主人通常会先给他端上一杯茶。

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Fish fired 10 aces and won 82 percent of his first serves to clinch his first win against Murray since 2005, ending a run of three defeats.

CNN: Champion Murray battered by Fish in another Miami upset

Davydenko was now in command, making 70% of first serves and flinging himself out wide to anticipate Del Potro's flat serves and favourite off-forehand into the corner, and he wrapped up the first set after 38 minutes.

BBC: Nikolay Davydenko takes ATP World Tour title in London

In the 2010 final, Nadal hit 51 first serves to Soderling's backhand versus 21 to the forehand.

WSJ: Rafael Nadal, the Underrated Tactician, Stalks Novak Djokovic