all of 50p/20 minutes etcspoken used to emphasize how large or small an amount actually is 足足[仅仅]花了50便士/20分钟等〔强调数量之大或小〕 The game lasted all of 58 seconds. 那场比赛一共就进行了58秒钟。
The repairs are going to cost all of £15,000. 修理要花费足足15,000英镑。
→ all of 50p/20 minutes etc at all1(8)