1、operation

（由大量人员参与、具有高度组织性的）活动，行动，工作

The rescue operation began on Friday afternoon.

救援行动于星期五下午开始。

The soldiers were engaged in a military operation close to the Ugandan border.

这些士兵参加了乌干达边境附近的一次军事行动。

企业；公司

Thorn's electronics operation employs around 5,000 people.

索恩的电子公司雇用了约5,000名员工。

The two parent groups now run their business as a single combined operation.

这两个母公司现在合并为一家企业经营业务。

使用；运作

Until the rail links are in operation, passengers can only travel through the tunnel by coach.

在铁路连线开通之前，乘客只能乘坐长途客车穿越隧道。

the free banking system that has been in operation since the early eighties.

从80年代初就开始实行的自由银行制度

2、conceive

想象;相信

I just can't even conceive of that quantity of money.

那么多钱，我根本都无法想象。

He was immensely ambitious but unable to conceive of winning power for himself.

他雄心勃勃，但是想不出自己能如何赢得权力。

构思;设想;想出

She had conceived the idea of a series of novels.

她萌生出撰写系列小说的想法。

He conceived of the first truly portable computer in 1968.

1968年，他构想出第一台真正的便携式计算机。