Biotaxis
活細胞趨性
??? 情景例句
Never say die.
永不氣餒！
Would you mind mailing this letter for me?
你能替我寄這封信嗎？
Look, the falling leaves are all yellow. Lots of fallen leaves make the road yellow.
看那飄零的落葉，都是黃色的，黃色的落葉鋪滿的路面。