完成一半的

While hydrogen obtained from water is the gas that would be used as a fuel, the splitting of oxygen from water is the more technically challenging "half-reaction" in the process, Belcher explains, so her team focused on this part.

这种方法使产生氧气的效率提高了4倍，研究人员希望能够找到同样的以生物学为基础的系统来完成这个反应的另一半过程——分离氢气。目前，从水中分离的氢被分成质子和电子。

Sometimes you can get rid of half your to-do list by finding others who can do the task as well or even better than you can.

如果你找到其他同样可以完成任务，甚至比你做的更好的人，并把这样的任务委派出去，你有时甚至可以剪除一半你的"要做事项"清单里的任务。

Then, if you can think of negative events as not being your fault and have no bearing on future events or other areas of your life, you're the rest of the way there!

然后，如果你能做到认为负面的事件不是你的错，而且对你未来生活的其他方面无所畏惧，则你已经完成了另外的一半乐观！

Assuming a conservative value of $5 per tonne of carbon locked up by trees, she calculates that a wildfire which spread through half of the landholding that Mr Maggi is legally required to keep as forest would cost him $16m. That would make intact rainforest hot property indeed.

巴尔什博士已完成对实验结果的初步估算，假设森林吸收的每吨二氧化碳保守价值为5美元，则一场蔓延玛吉家族一半林地的大火所造成的损失就得让他付出1600万美元，而这会使还处于原始状态的雨林变成非常抢手的财富。

Ricardo Zonta, recently confirmed as Panasonic Toyota Racing's third driver for 2006, is only halfway through his testing programme for the week.

Ricardo 只完成了他本周测试工作的一半。一个很好的开头之后，第二天 Ricardo 的工作因为加油泵的问题而被缩短了。

Urbanisation has been one of the main driving forces and by some calculations the process is only half-complete.

城市化一直是中国经济增长的主要驱动力之一，根据一些人的推算，目前中国的城市化进程只完成了一半。

AIDS antibody testing, which is equivalent to the completion of the half, this is a screening test, almost a little specific, for it requires a confirmation test to determine whether the existence of antibodies; HIV antibodies, the presence of false positive or cross-immunity phenomenon.

检测艾滋病抗体，相当于完成了一半，这是一个初筛实验，特异性稍微差一点，因为它还需要一个确证实验来确定抗体是否真的存在；艾滋病病毒的抗体，是否存在假阳性或交叉免疫的现象。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。