发圈的英文：
hair ring

hair是什么意思：
n. 毛发；头发；些微

This hair conditioner is excellent for revitalizing dry, lifeless hair.
这种护发素能够非常有效地修复干枯的头发。

The flowers in their hair are pale and faded.
她们发上的花朵已经褪色枯萎了。

Her hair is naturally crisp.
她头发是天热卷的。

They bobbed their hair to be in style.
她们剪了赶时髦的短发式。

She has sleek black hair.
她有着乌黑闪亮的头发。

ring是什么意思：
n. 环形物；戒指；拳击场；铃声，钟声
v. 包围；成环形；按铃；敲钟；回响；打电话

There was a ring at the bell.
铃声响了。

The impulse ring is a composite, magnetized ring.
脉冲环是一个合成磁化圈。

That ring is certainly the cheese.
那只戒指无疑是精品。

The lost ring was never found.
遗失的戒指再也没有找到。

multiple (double) annual ring
复年轮