1.表述：the apple of one’s eyes

释义：A cherished or favored person. （掌上明珠，最喜欢的人，最珍惜的人）

例句：He has five kids, but his only daughter is clearly the apple of his eye.

他有五个孩子，但他唯一的女儿显然是他的掌上明珠。

He told her that she was the apple of his eye, that she was wound around his heartstrings.

他告诉她，她是他的掌上明珠，是他的心头肉。

The black currant trees were the apple of Joseph's eye.

这些果树是约瑟夫的宝贝。

John regarded the gold ring left by his dead wife as the apple of his eye.

约翰把他亡妻留下的这只金戒指视为珍宝。

2.表述：apple of discord

释义：Something that causes unhappiness or trouble.（祸根）

例句：That prom dress has been their apple of discord—they've been fighting over who gets to wear it for days now!

那件愚蠢的舞会礼服一直是他们争论的焦点——他们已经为谁能穿它争论了好几天了!

Why aren't you talking to Mary Beth? What is the apple of discord here?

你为什么不和Mary Beth说话？你们不和的原因是什么？
The right to inherit the large estate became the apple of discord among the three brothers.

大笔地产继承权成了三兄弟纷争的起因。

The use of the car was an apple of discord between Jack and his wife.

谁可使用这辆汽车，乃杰克和太太争吵的原因。