雌雄蕊异熟

例句：

1. 1. The flowering period of this plant is quite long.
   这种植物的花期相当长。
2. 2. The scientists observed that the flowering period of the plants was affected by the temperature.
   科学家们发现，植物的花期受温度影响。
3. 3. The study found that the flowering period of the plants could be controlled through genetic engineering.
   研究发现，通过基因工程可以控制植物的花期。