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- The zircons we studied were depleted in oxygen 18 relative to the mantle, and such depletion occurs only if the crystals formed from rocks that interacted with rain or snow. 因为相较于地函，我们所研究的锆石，氧18含量偏低，而这种情形只有可能是晶体的母岩曾经和雨水或雪发生交互作用。
- Because heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18. 因为较重的同位素倾向于留下，当水从海洋表面蒸发时，余下的海洋水逐渐变得富含氧18。
- Water contains hydrogen and oxygen. 水含有氢和氧。
- She performed on the balance beam with much grace. 她在平衡木上表演得非常优美。
- The beam of the searchlight pierced the darkness. 探照灯的光柱射入黑暗中。
- His answer was right on the beam. 他的答案完全正确。
- Oxygen enters into many compound bodies. 氧是许多化合物的组成部分。
- She took the veil when she was 18. 她十八岁时当了修女。
- UK nationals get the vote at 18. 英国国民18岁始有选举权。
- He struck the beam with his head. 他的头撞到梁上了。
- The beam has a thickness of 3 inches. 这根梁厚3英寸。
- Mars is too dry and poor in oxygen. 火星上面过于干燥，并且缺乏氧气。
- Never heard of her. You're off the beam. 我从来没有听说过这个人，你搞错了吧。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- The law forbids the sale of alcohol to people under 18. 法律禁止向18岁以下的人出售含有酒精的饮料。
- Fish take in oxygen through their gills. 鱼通过鳃摄取氧气。
- Mind you don't knock your head (on this low beam). 小心，别(让这根低梁)撞著头。
- Sighted land off the starboard beam. 转向右舷方向便望见了陆地
- The oxygen react vigorously with the impurity in the iron. 氧气与铁中的杂质发生剧烈的化学反应。
- The gymnast poised herself on the balance beam. 体操运动员在平衡木上保持平衡。
