您要查找的是不是：
- length of frost free period 无霜期间
- length of frost free season 无霜期间
- There's a touch of frost in the air. 空气中略有寒意。
- This river is ten times the length of that River. 这条河的长度是那条河的十倍。
- She paced out the length of the room. 她用步子测量了房间的长度。
- He fished a length of string out of his pocket. 他从口袋里掏出一条绳子。
- You spend a ridiculous length of time in the bath. 你洗澡用那麽长时间，真不像话。
- frost free period 解冻期,无霜期
- Promotion will go by length of service. 晋升以服务年限为准。
- The trees were clothed in a white mantle of frost. 树披上了一层白霜的服装。
- He measured the length of the room. 他量了房间的长度。
- She paced out the length of the garden. 她用步子量出了花园的长度。
- My estimate of the length of the room was 10 feet. 我估计房间的长度为10 英尺。
- She sprinted the length of the road. 她全速跑完了那条路的全长。
- The plants are tolerant of frost. 这些植物耐霜。
- There could be a touch of frost tonight. 今天夜里可能略有霜冻。
- He fish a length of string out of his pocket. 他从口袋里掏出一条绳子。
- There was 5 degrees of frost last night. 昨晚气温为零下五度。
- The length of the movie is two hours. 影片长两小时。
- Critical water content of frost heaving. 土壤开始产生冻胀时的临界含水率。
