牙线可用来清洁牙间隙.Dental floss is used to clean between your teeth.发生阻生的局部因素主要是牙间隙不足.The main factor lead to impacted teeth was insufficient interdentium.关闭磨牙间隙后牙槽骨改建及牙根吸收情况.Root resorption after the closure of molar space....
我们多年来都开着一辆生锈的旧货车四处旅行。We spent years travelling around in a rusty old van.水手们在等待离港的时候四处闲逛。Sailors hung about while they waited to ship out.她领着我四处看了看，将我介绍给每个人。She showed me round and introduced me to everybody....
The fairy king and queen were contending over possession of the cat.仙王和仙后争着要这只猫.Our football team is contending with one from the next town for the championship.我们的足球队正与邻镇的足球队争夺冠军.He was tiresome in contending for the va...