the First-Frost period

• 初霜

the First-Frost period的用法和样例：

例句

1. Try to harvest the fruit before first frost.
   试著在初霜之前采摘水果。
2. It was early October, but a crispiny frost had already stamped the maple trees with gold.
   还是十月上旬，但初霜已经把枫叶染上了金黄。