two and a half times的意思|示意

By the time you turn 70, your heart will have beat some two-and-a-half billion times (figuring on an average of 70 beats per minute.)

到70岁时，你的心脏已经跳动25亿次(假设平均每分钟跳动70次)。

It is about two and a half times nearer to the sun than our earth, therefore it receives nearly seven times as much light.

它与太阳的距离与地球相比，大约是1：2 . 5，因此，水星受到太阳照射的强度大约是地球的7倍。

Last week instances of Gumblar across the web increased by almost two-and-a-half times, while security company Sophos says it was responsible for 42% of all cases of malicious code found on websites.

上周盖博拉在整个网络上的案例增加了近两倍半，而网络安全公司Sophos表示，网站上发现的恶意代码中42%与这个病毒有关。

Between 1920 and 1960, big cities in developed countries increased two and a half times in size, but in other parts of the world the growth was eight times their size.

在1920至1960年间，发达国家大城市的规模增加了两倍半，但是在世界其他地方，城市的规模相当于原来的8倍。

In the eleventh century China was producing two and a half times as much iron as did England and Wales together in 1640.

在十一世纪中国正在产生两个半倍，铁一样在1640年英格兰和威尔士在一起。

half an hour or more, two or more times a year, providing every employee with feedback on performance, and then setting goals for the upcoming evaluation period.

如果管理者一年能够花上半小时或更多是时间，为每个员工提供反馈的话，就更好了，然后就能为即将到来的评估设定新目标了。