For a brief moment during that stage of its lifecycle, the tongue consists of two tiny half-tubes before merging into one.
在它生命周期的这一阶段,有短暂的一刻,其舌头由两个微小的半管组成,随后融合为一体。
2
If conditions within an organism's environment occasionally or regularly become harsh, it may be advantageous for an organism to have a resistant stage built into the lifecycle.