单词extra-
pf.: 在…之外；超出；越出；非常
pref.: 一般加在形容词之前表示“外”
在…之外；超出；越出:
outside; beyond
非常；格外；十分:
very; more than usual
一般加在形容词之前表示“外”,“额外”,“格外”,“临时”,“超出”: extra-fine, extraterritorial
What if you applied this in reverse: did a bit of extra research on your most difficult topics.
如果你把这反过来应用会如何？例如，对最困难的题目作更多的研究。
Should this beautiful window cause just a little extra colour to shine down upon this ancient place, I should gladly settle for that.
如果这扇漂亮的窗户能为这个古老的地方增添色彩，我将为此感到高兴。
You might have thought resisting that piece of chocolate cake or extra biscuit was simply a matter of exerting a little will power.
你也许会认为，抵住一块巧克力蛋糕和一块额外的饼干的诱惑，仅仅是发挥一点意志力的问题。
I happened to have an extra one, so I took it out of my pocket and put it on her desk.
我刚好有一支多余的（笔），所以我就从我的兜里拿出来放到她桌子上。
When this person is given a new assignment or extra work, he reacts as if the boss told him he"d never be able to leave the office again.
当这种人被交代了一项新工作或额外的工作，他的反应仿佛老板让他永远无法下班。
During this speech Bush said the extra troops are needed to battle Taliban fighters who are gearing up for a new spring offensive.
布什在讲话中称，与准备发动新一轮春季攻势的塔利班士兵作战需要额外增派军队。
All that extra carbon dioxide, however, has been a bitter pill for the ocean to swallow.
然而，海洋并不能吸收掉所有这些额外的二氧化碳。
You"d like to put your extra money into savings accounts or investment. Waiting for interest to receive is no problem for you.
你喜欢把多余的钱用于储蓄和投资，然后就等着收利息吧。
Scientists say extra fluoride is likely to have at least a small additional effect on enamel -- but more research is needed.
科学家们说，额外添加的氟化物可能会对牙釉质产生一点细微的保护效果，不过，这也有赖于更多研究的证实。
Extra hole drilled at the end of the well (beyond the last zone of interest) to ensure that the zone of interest can be fully evaluated.
在井眼底部（在最后一个感兴趣的产层下面）额外钻进的一段井眼，以便确保感兴趣的产层能够被完全评估。