维护

keep a house in good condition

uphold justice

maintain/uphold one's credibility

maintain/safeguard the unity of the motherland

safeguard the people's interests

champion/safeguard the rights and interests of consumers

defend/guard the reputation/authority

defend national honour

safeguard national economy

keep/safeguard/maintain peace

protect legitimate business activities

safeguard China's national sovereignty, security and territorial integrity

uphold unity and stability

routine maintenance

product/software maintenance

maintenance instruction

poor maintenance