您要查找的是不是：
- The Influence of the Virtual Towing Position on Plow Unit System 虚牵引点位置对犁耕机组系统的影响
- He was really just ploughing the sand. 他不过是在白费力气。
- He was really just ploughing the sands. 他不过是在白费力气。
- They were ploughing a lonely furrow. 他们孤立无援。
- The luminous intensity on unit area. 单位面积上的发光强度。
- Since her daughter's death she has been ploughing a lonely furrow. 自从她女儿死后，她一直过着孤独的生活。
- Farmers plow in autumn or spring. 农民在秋天或春天犁地。
- The plow was pulled by a yoke of oxen. 一对公牛同轭拉着一头犁。
- Farmers now use tractors to plow their fields. 现今农民用牵引机耕地。
- The family is the smallest social unit. 家庭是社会最小的单位。
- It's all to no purpose. I tell you that you are ploughing the sand. 这都是毫无作用的。告诉你，你是在白费力气。
- Pressure is force per unit area. 压力就是电单位面积上的力。
- A set of data elements which are handled as a unit. 作为一个单元来处理的一组数据元素。
- The family is the basic unit of society. 家庭是社会的基本单位。
- A plow equipped with several blades that make parallel furrows. 多铧犁一种具有几个能翻平行垄的刀口的犁
- A metric unit of area equal to 10 ares. 十公亩面积的公制单位之一，等于十公亩。
- A metric unit of mass equal to 100 grams. 百克公制质量单位，等于100克。
- A unit of power equal to 1,000 watts. 千瓦功率的单位，等于1,000瓦。
- The farmer turned up a human skull while ploughing the field. 那农民 地时挖出一个人类的头颅骨。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
