-
Quantity of hair is large, and each is unicellular.
毛状体数量丰富，均为单细胞；
youdao
-
The Earth was just over 2 billion years old, and home only to unicellular life-forms.
20亿年前地球刚刚诞生，地球上只有些单细胞生物。
youdao
-
The Earth was just over 2 billion years old, and home only to unicellular life-forms.
20亿年前地球刚刚诞生，地球上只有些单细胞生物。
youdao