The use of steam in fixation (殺青) of tea leaf enzymes is an important step in processing tea, with the leaves quickly cooled down and then undergoing further processing.
利用蒸汽对茶叶酶进行杀青是加工茶叶的重要步骤，在这个步骤中，茶叶迅速冷却，然后进行进一步加工。