By Jonah Fisher, South Africa

媒體英語會帶大家一起學習BBC撰稿人在報道世界大事時常用到的單詞和短語。

Background: 南非公安局局長貝吉-賽勒宣布在他的領導下，現任警察一律不得超重。他說他想讓犯罪分子面對著身體強壯有紀律性的執法人員感到懼怕。最近一項調查報告發現近一半的男女警察都被診斷為患有肥胖癥。

South Africa's police force has an image problem.

Faced with one of the world's highest crime rates, its officers are seen by many as ineffective, sometimes corrupt and often lumberingly overweight.

That's now all supposed to change under Bheki Cele the new police commissioner.

Launching a new zero tolerance approach to podgy policemen, Commissioner Cele completed a round of aerobics and ran 4000 metres round the track.

Over a healthy breakfast he said that officers would from now on have to fit into the size of trousers they wore when they were first trained.

Those requesting an extra few centimetres round the waist will now be politely refused and given a year in which to follow a designated weight loss plan and squeeze into their old size.

Those who still burst the seams will be shown the door.

With the World Cup starting in less than three months time, this is the South African police trying to show that they are up the task of protecting the up to 400,000 visiting fans.