a series of planned activities that are intended to achieve a particular social, commerical or political aim
指為社會、商業或政治目的而進行的壹系列有計劃的活動或運動
the campaign for parlimentary reform 要求議會改革的運動
an advertising campaign 廣告宣傳活動
sport
activity that you do for pleasure and that needs physical effort of skill, usually done in a special area and according to fixed rules
體育活動
the use of drugs in sport 禁藥在體育運動中的使用
game
1. an activity or a sport with rules in which people or teams compete against each other
有規則的遊戲、運動、比賽項目
card games 紙牌遊戲
board games 棋類遊戲
ball games, such as football or tennis
2. an occasion of playing a game 壹項遊戲、運動、比賽
to play a game of chess
Saturday's League game against Swansea 聯賽中星期六對斯旺西隊的比賽
Let's have a game of table tennis, 咱們來打場乒乓球賽吧
3. sb's game (the way in which sb plays a game)
比賽（或遊戲）時用地手法；比賽（或遊戲）技巧
Hendry raised his game to collect the first prize. 亨得利的比賽技巧有所提高，得到了頭等獎
Stretching exercises can help you avoid injury and improve your game. 伸展運動有助於防止身體受傷，並能提高比賽技巧。
4. a section of some games, such as tennis, which forms a unit in scoring
（網球比賽的）壹場，壹局
5. 兒童遊戲
a game of cops and robbers 警察抓強盜的遊戲
6. 消遣，娛樂
He was playing games with the dog.
7. 活動，行業
How long have you been in this game? 妳幹這行多久了？
8. a secret and clever plan; a trick
詭計；策略；花招
So that's his game (=now I know what he has been planning). 原來這就是他得鬼把戲
以上所有資料來自牛津高階英漢雙解詞典第七版
希望這些對您有幫助！！