您要查找的是不是：
- He lined out for home without a backward glance. 他头也不回，急忙往家里走去。
- Childrenseem to learn about computers by osmosis. 儿童似乎不知不觉地就了解了计算机。
- This part of the country is still backward. 这个国家的这个地区仍很落后。
- In some cities housing conditions went backward. 某些城市的住房条件越来越差。
- The teacher was patient with backward children. 那位老师对迟钝的学童十分耐心。
- backward osmosis 反向渗透
- He looked backward over his shoulder. 他回头向后看。
- Blood can be cleaned by osmosis if the kidneys have failed. 若肾功能衰退，可通过渗透作用使血液净化。
- She looked backward over her shoulder. 她回头往後看。
- Learned French by osmosis while residing in Paris for15 years. 居住在巴黎的十五年中已经潜移默化地学习了法语
- Sheila is very clever but rather backward in expressing her ideas. 希拉很聪明，然而在表达思想时却有些腼腆。
- Although he is clever, he is backward in giving his views. 他虽然很聪明，却不善发表他的意见。
- Frank was so backward that he hesitated to ask her to dance. 法兰克非常腼腆,不好意思请她跳舞。
- He had a firsthand taste of life in backward mountainous areas. 他直接体验过落後山区的生活。
- To diffuse or cause to diffuse by osmosis. （使）渗透通过渗透作用渗出或使渗出
- Water passes into the roots of a plant by osmosis. 水经透析进入植物根部。
- To master the principle of osmosis. 识记渗透作用的原理。
- A backward flow of water, as from the action of oars. 反流，逆流向后流的水，如由浆的划动引起
- The backward man lacks black background. 落后的男子缺少黑色背景。
- RO is based on the process of osmosis. 反渗透是基于渗透工艺基础上。
