in a ring短语⁴²⁰⁴⁴ 基本例句 成一圆圈 The orbits shift slightly each revolution and so the electron doesn't stay in a ring, but forms a“ shell.” 每飞行一圈，轨道略有移动，因此，电子并不呈环状，而是形成一个“外壳”。 blog.sina.com.cn The village is pocketed in a ring of hills. 这座村庄四周山峦环绕。《21世纪大英汉词典》