1. Exercise can result in iron loss through a variety of mechanisms.
    运动可能通过多种机制导致铁离子流失。

2. By comparison, trips by sea offer a great variety of civilized comforts.
    相比较而言，海上旅行可提供各种文明的舒适条件。

3. By comparison, ferry trips or cruises offer a great variety of civilized comforts.
    相比之下，坐船旅行或环游可以得到文明世界的各种享受。

4. We all need variety in our diet.
    我们都需要饮食多样化.

5. Today, enough soundings are available to enable a relief map of the Atlantic to be drawn and we know something of the great variety of the sea bed´s topography.
    现在已有足够的水深测量数据来绘制一张大西洋洋底地形图，而且我对海底地形的千变万化也有了一定的了解。

6. There is so much variety that you never have to make do with second best.
    物品种繁多，从来不必用二等品来凑合。

7. And 2) adults who for a variety of reasons might want to clone themselves.
    2）成年人出于各种各样的原因想要克隆自己。

8. "People have a variety of emotion," argues Harvard psychology professor Jerome Kagan.
    "人们的情感是多种多样的，" 哈佛大学心理学教授杰罗姆·凯根说，

9. Scientists discovered that this particular variety of rabbit was susceptible to a fatal virus disease, myxomatosis.
    科学家们发现, 这种特殊品质的兔子易患一种叫做"多发性粘液瘤"的致命病毒性疾病.

10. Scientists discovered that this particular variety of rabbit (and apparently no other animal) was susceptible to a fatal virus disease, myxomatosis.
    科学家们发现，这种特殊品种的兔子（显然不包括别的动物）易患一种叫"多发性粘液瘤"的致命毒性疾病。