Měigè rén dōu zài wèi guójiā de jiànshè tiānzhuān-jiāwǎ.
Everyone is doing their bit for the country's development.
Tips
usage
Always paired with 为 + [cause] to state what you're helping build: 为祖国建设、为公司发展、为项目添砖加瓦. Modest and humble in tone - the speaker acknowledges their contribution is small, just bricks and tiles on a big structure.
memory
Visualize a construction site. You can't build the whole house, but you can carry bricks (砖) and lay tiles (瓦). Every small contribution builds the wall bit by bit.
