A sportscaster is the person you hear talking on TV or radio while a game is happening. They tell you what is going on — who has the ball, who just scored, how much time is left — and they usually keep talking between the plays too, giving background about the players and the teams.

A sportscaster體育主播（sportscaster） is the person you hear talking on TV or radio while a game is happening是比賽進行時你在電視或廣播上聽到一直在講話的那個人。They他們 tell you what is going on會告訴你場上發生什麼事——who has the ball誰控球，who just scored誰剛得分，how much time is left還剩多少時間——and they usually keep talking between the plays too而且通常在中場空檔也會繼續講，giving background about the players and the teams講講球員和球隊的背景。

The word is mostly American. In Britain people are more likely to say commentator.

The word這個字 is mostly American主要是美式用法。In Britain在英國，people大家 are more likely to say commentator比較會說 commentator。

In American use it stretches a little: it can mean the person doing the live play-by-play during the game, and it can also mean the person in the studio who reads the sports news on the evening broadcast. Both are sportscasters, even though one is shouting over a crowd and the other is sitting at a desk. It is a job title, so it sounds a bit formal — in ordinary talk people are more likely to say 'the announcer' or just 'the guy calling the game'.

In American use在美式用法裡，it它 stretches a little會用得稍微寬一點：it它 can mean the person doing the live play-by-play during the game可以指比賽中負責即時逐球講評的人，and it也可以 can also mean the person in the studio who reads the sports news on the evening broadcast指在攝影棚裡念晚間體育新聞的人。Both這兩種人 are sportscasters都算是 sportscaster，even though one is shouting over a crowd and the other is sitting at a desk即使一個是在人群喧鬧中大聲喊話，另一個是坐在桌前。It它 is a job title是個職稱，so it sounds a bit formal所以聽起來有點正式——in ordinary talk在一般對話裡，people大家 are more likely to say 'the announcer' or just 'the guy calling the game'比較會說 'the announcer'（播報員），或就直接說「那個在講比賽的人」。