transpiration
transpiration — 名詞
1. the biological process in which water moves up through a plant and escapes as va
蒸散作用
植物水分以水蒸氣釋出
the biological process in which water moves up through a plant and escapes as vapour from its leaves, stems, or flowers through tiny openings called stomata
On hot summer days, a mature sunflower can release several litres of water through transpiration.
在炎熱的夏天，一棵成熟的向日葵每天可以透過蒸散作用釋放出好幾公升的水。
collocation: through transpiration
Amira's biology teacher tied a plastic bag over a branch to show transpiration in action.
Amira 的生物老師用塑膠袋套住樹枝，實際展示蒸散作用的過程。
concrete demonstration of the process
During a drought, trees shed leaves to reduce transpiration and save water.
乾旱期間，樹木會落葉以減少蒸散作用，把水分保留下來。
A plant's transpiration rate depends on temperature, humidity, and wind speed.
植物的蒸散速率取決於溫度、濕度及風速等因素。
Without transpiration, soil nutrients cannot reach the top leaves of a tall tree.
少了蒸散作用，土壤中的養分就無法輸送到高大樹木頂端的葉子。
用法筆記
Usually uncountable; used mainly in botany and plant physiology contexts. Transpiration is distinct from evaporation because the water passes through living plant tissue before being released.