A project might include planting native seed-bearing plants in parks and lanes , or building birdhouses designed to attract a particular species .
一个项目可能包括在公园和街区种植乡土植物，或设置人工鸟屋以吸引某一特定鸟类。
Because your friend gina is more productive at printing t-shirts and building birdhouses compared to mike , she has an absolute advantage in both printing t-shirts and building birdhouses .
