1、overcome

克服；控制；战胜

Molly had fought and overcome her fear of flying.

莫莉已经努力克服了对飞行的恐惧。

Find a way to overcome your difficulties.

找出办法战胜困难。

（感情上）受到极大影响，承受不起

The night before the test I was overcome by fear and despair.

考试前的晚上，恐惧和绝望让我内心无比惊慌。

A dizziness overcame him, blurring his vision.

他感到一阵眩晕，眼前发黑。

（烟、毒气等）熏倒，使受不了

The residents were trying to escape from the fire but were overcome by smoke.

居民试图逃离火场，却被浓烟熏倒了。

2、concentrate

全神贯注;集中（心思）

It was up to him to concentrate on his studies and make something of himself.

是否能专心学习并取得一定成就要靠他自己。

Water companies should concentrate on reducing waste instead of building new reservoirs.

自来水公司应该集中精力减少水浪费，而不是修建新水库。

使集中;使汇集

Italy's industrial districts are concentrated in its north-central and north-eastern regions.

意大利的工业区集中在该国中北部和东北部地区。

Most development has been concentrated in and around cities.

土地开发主要集中在城市及周边地区。