in the lower ground levels在这句话中是什么意思,请英语达人们解释下,3QSnow aids farmers by keeping heat in the lower ground levels,thereby saving the seeds from freezing.

lower ground in the lower ground levels在这句话中是什么意思,请英语达人们解释下,3QSnow aids farmers by keeping heat in the lower ground levels,thereby saving the seeds from freezing. on the ground还有near the ground under the ground in the ground? High In the lower 80s the lower note is in that in the ground 和on the ground的区别 in the ground和on the ground的区别 in the ground ,under the ground的区别 英语翻译upper and lower sidebandsupper and lower side frequenciespeak change in the amplitude of the envelope The price of the hotels ____(be) lower in winter. We play in the play ground be let in on the ground be let in on the ground Many people in the world live in big cities ,which are often dirty and difficult places to live in .And some cities will get bigger .They will also get higher and lower ,because people will begin to live in tall buildings as well as under the ground 这段话什么额意思Caution:the system will automatically raise/lower the vehicle in the next procedure.remove all obstructions and keep clear of vehicle before proceeding The vehicle needs to be on level ground with the wheels pointed straight a in the ground还是on the ground?讲点知识点.Thanks. 用this,the,floor,ground,is,UK,in,the(.,造句) fix the post in the ground ,please 求翻译!