It's now so rare that this individual is watched over day and night.如今犀牛十分稀有，因而这一头被日夜监管着

watch over看守； 监视； 照管

Would you please watch over my booth?

请您照料一下我的摊位好吗?

The soldiers were keeping close watch over the enemies.

士兵们严密注意着敌人的行动。

But he is in great danger,但是他却身处巨大的危险之中

in danger在危险中

He was in danger of losing his life.

他有失去生命的危险。

The house is now in danger of collapse.

这座房子有倒塌的危险。

Today, powdered rhino horn can fetch up to $65,000 a kilo.如今，犀角粉卖到了每公斤65000美元

fetch up到达；突然停止；弥补

The car suddenly fetch up before a big tree.

小汽车突然在一棵大树前停了下来。

He must fetch up the time he has lost.

他必须弥补上已经失去的时间