全部

1·When installing the automatic waterer, make sure that the water pipes to the unit are below the frost line.

当安装饮水器时，务必确保水管到装置低于冻结线。

2·To prevent damage from repeated freeze-thaw cycles, the bottom of the foundation must be below the frost line.

为了防止反复冰冻解冻循环的损害，地基的底部必须在霜线以下（此处的土壤不受地表冰冻的影响）。

3·The experimental results indicated that the frost layer grew very slowly with the effect of ultrasound, and the frost layer composed by frost line was more inerratic.

研究显示，冷表面霜层在施加超声波作用后仅有少量生长，霜层分布相对规则，由一簇簇“霜线”组成。

4·Ten mile pinghu frost all over the sky, inch black hair sorrow, for on line looking at each other, only envy mandarin duck not envyimmortal.

十里平湖霜满天，寸寸青丝愁华年，对月行单望相互，只羡鸳鸯不羡仙。