1、turn on

打开（设备）；接通（…的供应）

I want to turn on the television.

我想开电视。

She asked them why they hadn't turned the lights on.

她问他们为什么不开灯。

对…进行身体（或语言)攻击;斥责

Demonstrators turned on police, overturning vehicles and setting fire to them.

示威者攻击警察，推翻车辆并将其纵火焚烧。

He turned on Pete and accused him of being mixed up in drugs.

他怒斥皮特，指责他沾染毒品。

依靠;取决于

The plot turns on whether Ilsa will choose her lover or her husband.

故事情节取决于伊尔莎会选择情人还是丈夫。

2、current

(河、湖或海的)水流，潮流

Under normal conditions, the ocean currents of the tropical Pacific travel from east to west.

在正常情况下，太平洋的热带洋流自东向西流。

The couple were swept away by the strong current.

这对夫妻被巨大的水流卷走了。

思潮;潮流;趋向

Each party represents a distinct current of thought.

每个党派代表一种不同的思潮。

A strong current of nationalism runs through ideology and politics in the Arab world.

一股强烈的民族主义思潮涌入阿拉伯世界的思想体系和政治体系。

现时的;当前的;进行中的

The current situation is very different to that in 1990.

当前的形势与1990年截然不同。

He plans to repeal a number of current policies.

他计划废除一些当前的政策。