He's started a business doing gardening and roofing work.他开办了一家从事园艺和盖屋顶业务的公司。They devote each Saturday to cultivating their gardens.他们把每个星期六用来从事园艺。Gardening is my mother's favourite pastime.从事园艺是我母亲最喜爱的消遣。Gardening is a way for city dwellers to return to the soil.从事园艺是城市居民务农的一种方式。