1、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。

2、surround

围绕;环绕

The small churchyard was surrounded by a rusted wrought-iron fence.

不大的教堂墓地周边围着一圈生锈的熟铁栅栏。

The shell surrounding the egg has many important functions.

蛋壳有许多重要的功能。

与…密切相关;围绕

The decision had been agreed in principle before today's meeting, but some controversy surrounded it.

该决定在今天的会议之前就已达成原则上的共识，但围绕这一决定还存在一些争议。

Once the euphoria surrounding this victory subsides, reality must return.

这场胜利的喜悦退去后，人们将不得不回归现实。