協力

to unite in common effort

to cooperate / to harmonize / to help / to assist / to join

power / force / strength / ability / strenuously

to work with a common purpose (idiom); to make concerted efforts / to pull together / to work as one

to work with a common purpose (idiom); to make concerted efforts / to pull together / to work as one

Organization for Economic Cooperation and Development (OECD) / also written 經濟合作與發展組織|经济合作与发展组织[Jing1 ji4 He2 zuo4 yu3 Fa1 zhan3 Zu3 zhi1]

vehicle powered by two or more pedallers (typically, a tandem bicycle)