留美老師帶你每日說英文 第430期:葉綠素的分解
臺灣籍旅美老師今天交給我們的句子是:
Chlorophyll breaks down and is replenished all summer long. As daylight hours shorten, however, veins that bring water and nutrients to the leaf gradually close off.
整個夏天,葉綠素不斷分解,然後又被補足。但是當日照時數縮短的時候,爲葉子帶來水分跟營養的葉脈會逐漸關閉。