Some solitary bees make their nests in burrows in the soil.一些独居蜂会把巢筑在田间的地洞里。The intertidal beach unit contains some organism burrows.潮间海滩单元含有一些生物潜穴.A mole burrows its way through the ground.鼹鼠会在地下钻洞前进....
But the whole question of aid is a tricky political one.但是整个援助问题是个非常复杂的政治问题。It's been a tricky business marketing his new invention.推广他的新发明一直是件棘手的事情。Parking can be tricky in the town centre.在市镇中心停车可能会挺费事。This is a t...