春天第一只知更鸟常被看作天气转暖的吉兆。
The first robin of spring is often seen as a favorable prognostic of warmer weather ahead.
▼点击显示答案
解释
prognostic 是名词，意为「预兆、征兆」，指自然界中暗示未来事件或变化的迹象或信号。
The first robin of spring is often seen as a favorable prognostic of warmer weather ahead.
prognostic 是名词，意为「预兆、征兆」，指自然界中暗示未来事件或变化的迹象或信号。