occurrence

事件

This is rare occurrence as our climate seldom goes to extremes.

在我们这里，这种事情很少见，因为气候很少发生异常。

Such incident is an everyday occurrence.

这种事是家常便饭。

This is an unfortunate occurrence,but it can't be helped.

出了这事很不幸，可是也没办法。

proportion

比率，比例

We are lucky in that only the lower fields,which make up a very small proportion of our farm,

幸运的是，只有低洼地会受到影响，

are affected by flooding,but other farms are less favourably sited,

而低洼地在我们农场的比例很小，别的农场地势欠佳

and flooding can sometimes speall disaster for their owners.

有时候洪水来了，会给那些农场主带来灾难。

The proportion of the white people in LA has been going down in the past few years.

洛杉矶白人的比率在过去的几年里一直在下降。

site

使位于

The company is trying to decide where to site its new store.

公司在设法确定新店的选址。

The house is beautifully sited to give a splendid view over the valley.

房子的位置很好，山谷的景色一览无