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、maintain

维持;保持

The Department maintains many close contacts with the chemical industry.

这个部门与化工行业保持着众多密切的联系。

Push yourself to make friends and to maintain the friendships.

要求自己与人交友并保持友谊。

断言;宣称;坚称

He has maintained that the money was donated for international purposes.

他坚称这笔捐款将用于国际用途。

Prosecutors maintain no deal was made.

原告坚持说不存在任何交易。

保持，维持（在某一比率或水平上）

The government was right to maintain interest rates at a high level.

政府维持高利率的做法是正确的。

action is required to ensure standards are maintained at as high a level as possible.

要求采取行动确保标准维持在尽量高的水平上。