1、proper

適宜的；合適的；適當的；恰當的

Two out of five people lack a proper job.

每五人中有兩人沒有正當的工作。

I always cook a proper evening meal.

我總是把晚餐做得很豐盛。

正確的；準確的；最合適的

The Supreme Court will ensure that the proper procedures have been followed.

最高法院將確保程序的履行合乎規范

He helped to put things in their proper place.

他幫忙把東西放置妥當。

得體的；合乎體統的；正派的

In those days it was not thought entirely proper for a woman to be on the stage.

那個時候，女性登臺表演被認為不太得體。

It is right and proper to do this.

這么做很得體。

2、go back

追溯到；回溯到

The feud with the Catholics goes back to the 11th century.

與天主教的夙怨可以追溯到11世紀。

Our association with him goes back four years.

我們同他的合作是從4年前開始的。

回到（過去）；回顧

If you go back to 1960, you'll find that very few jobs were being created.

如果回到1960年，你會發現工作機會寥寥無幾。