Scientists are now on the threshold of an important discovery.

You are just on the threshold of life.

你不过刚踏上人生的道路.

Scientists are on the threshold of a breakthrough in their treatment of that disease.

科学家在治疗那种疾病方面很快就要取得突破.

Scientists are now on the threshold of a new discovery.

科学家即将作出新发现.

He may whet his knife on the threshold of the Fleet.

监牢门口把刀磨.

Scientists are now on the threshold of a better understanding of how the human brain works.

科学家对于人类智慧如何运作现在已开始有了较进一步的了解.

He is on the threshold of adulthood.

他即将[就要]成为大人.

The sound was so loud it was on the threshold of pain.

声音大得开始使人无法忍受.

He was on the threshold of his career.

他的事业刚刚起步.

She was on the threshold of social life.

她这就开始参加社交生活.

South America today stands on the threshold of enormous change.

而今,南美洲将会发生翻天覆地的变化.

On the top of very high mountains snow persists throughout the year.

高山之顶,雪积留全年.

He tented his men on the top of the hill.

他使他的部下扎营于山顶.

Standing on the top of the mountain, you can see the full extent of the forest.

站在山顶上, 你可以看到森林的全貌.

Kate carried our school banner on the top of a hill.

凯特在山顶上举着我们的校旗.

We decided we would be safe on the top of the hill.

我们断定呆在山顶上是保险的.

She put a sprinkle of sugar on the top of her cake.

她在蛋糕上洒了一点糖.

The tower is on the top of the hill.

塔位于山顶上.

The police are on the track of the gang.

警方正在追踪那帮团伙.

The pursuers hung on the track of the criminal.

追赶者跟踪着这个罪犯不放.

I'm on the track of a valuable painting.

我在追寻一幅珍贵的油画.