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...
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....