When there is frost or a frost, the temperature outside falls below freezing point and the ground becomes covered in ice crystals.
例句
There is frost on the ground and snow is forecast...地上结霜了,而且预报说会有雪。The wind had veered to north, bringing clear skies and a keen frost.风向已经转北,带来了晴朗的天空和严重的霜冻。
PHRASE
冰点以下…度;零下…度
When someone says that there are a particular number of degrees of frost they mean that the temperature is that number of degrees below freezing point.
例句
We had 11 degrees of frost last night.昨天夜里气温降到了零下 11 度。
英汉词典释义
vt. & vi.
(使)结冰霜
The fields have frosted up in this wintry morning.在这寒冷的早晨田野里覆盖着一层霜。The cold has frosted the windows.寒冷的天气使窗子结满了霜。
vt.
冻坏
The drop in temperature frosted the tomato plants.气温下降冻坏了番茄苗。
n.
霜冻, 严寒天气
Frosts spoil the last of the flowers.霜冻冻坏了最后一批花朵。
英英词典释义
Noun
1. ice crystals forming a white deposit (especially on objects outside)
2. weather cold enough to cause freezing
3. the formation of frost or ice on a surface
Verb
1. decorate with frosting;
"frost a cake"
2. provide with a rough or speckled surface or appearance;
"frost the glass""she frosts her hair"
3. cover with frost;
"ice crystals frosted the glass"
4. damage by frost;
"The icy precipitation frosted the flowers and athey turned brown"