sap does for trees what blood does for us.

sap does for trees what blood does for us. What does AISHK stand for what does AHM stand for What does LOMO stands for? what does NBA stands for? For they force us to say to ourselves,"What does he see that What does Bob has for dinner?改错 What does Jenny do for her monther? what does mary have for dreakfast? What does David want for his birthday? 翻译“What does HAS stand for?” What does\"cn\" onthe Internet stand for?