红颜的英文：
female intimate
belle

Beauty is But skin-deep
红颜易变

Beauty is but skin-deep
白骨红颜

Over the greatest beauty hangs the greatest ruin
红颜多薄命

Since olden times, beautiful women have suffered a harsh life
终古红颜多薄命

"And, because of all this, my heart is breaking And I fear for my bright cheeks, lest they fade."
感此伤妾心,坐愁红颜老。

a female; a hen
雌禽

This one is a female, and these are the female's structures.
这一棵是雌性 而这些就是雌性植物的结构。

pipe bend with female thread
两头带阴螺纹的弯头

Both felt that they are very intimate.
二人都认为他们亲密无间。

I have an intimate knowledge of the facts.
我熟知那些事实。

It is very difficult for one to have an intimate friend.
一个人要有一个莫逆之交很难。

There was a ring at the bell.
铃声响了。

The bell dinged.
钟丁当作响。

Jingle bells,jingle bells,jingle all the way.
铃儿响叮铛，铃儿一路响叮铛。