Yabla video uses of 恒定

zhè
duì
维持 wéichí
体内 tǐnèi
渗透压 shèntòuyā
de
恒定 héngdìng
yǒu
一定 yīdìng
de
好处 hǎochu
This has certain advantages in maintaining the constant osmotic pressure of the fish,