Secretions
n. 分泌（物）( secretion的復數形式 )
??? 情景例句
Would you like some coffee?
要不要來點咖啡？
This is a check.
這是一張支票。
We should not only know the theory but also how to apply it to practice.
我們不僅要知道理論，還要知道怎樣把理論應用于實踐。