Up to speed 了解最新情況
The UK measures speeds in mph (miles per hour)
今日小常識
The speed limit for cars in the UK is usually 30 mph in built-up areas, 60mph in countryside areas and 70mph on dual carriageways and motorways.
在英國，市區(qū)的車輛限速一般為每小時30英里，鄉(xiāng)村地區(qū)是每小時60英里，而高速公路是每小時70英里。
今日短語
短語 up to speed 意思是了解事情發(fā)展的最新情況, 它也可以指一個人能夠勝任某事。
例句
Is Fran up to speed with the project yet? If not, can you please tell her what's been going on since the last meeting?
Brian wasn't very good at using the software to begin with, but now he's up to speed. He just needed to practise.
請注意
不要同短語 speed up 搞混，speed up 的意思是提速，加快。
例句
Mike, speed up a bit please! We need to finish this today.
