you\'re helpful你很愿意帮忙（助人）helpful[英][ˈhelpfl][美][ˈhɛlpfəl]adj.给予帮助的，有益的; 愿意帮忙的; 例句:
1.Mules are very helpful animals. 骡子是非常有帮助的动物。
2.Caffeine might be helpful in reducing cellulite, which also involves weakened collagen. 咖啡因或许有助于减少橘皮组织，出现橘皮组织也与胶原蛋白减少有关。
