应当

Article 40 When investigating suspected monopolistic conduct, there shall be at least two law enforcing persons, and they shall present their certificates.

第四十条反垄断执法机构调查涉嫌垄断行为，执法人员不得少于二人，并应当出示执法证件。

When an administrative department conducts an investigation or inspection, there must be present at least two law enforcement personnel, who must produce their identity cards to the relevant party.

第三十七条行政机关在调查或者进行检查时，执法人员不得少于两人，并应当向当事人或者有关人员出示证件。

Article 40 When investigating a suspicious monopolistic conduct, there shall be at least two law enforcers, and they shall present their law enforcement certificates.

第四十条反垄断执法机构调查涉嫌垄断行为，执法人员不得少于二人，并应当出示执法证件。

You ought to be attentive at class.

你在课上应当思想集中。

In learning English, one should be bold to talk in the language with his friends.

在学习英语时，应当大胆地用英语和同学交谈。

We should be bold to accept high-tech, some truly scientific and technological achievements for our own use.

我们应当大胆的去接受高科技，让一些科技成果真正为我们所用。

You should be more careful of your health.

你应当更加注意你的健康。

We have to be more careful of our health.

我们应当注意自己的健康

So you have to be careful with your expectations.

所以你应当对自己的期望非常小心。

The establishment of independent director system should be centered on its effectiveness, and the criterion for its measurement is the function positioning of independent director.

独立董事制度的建立应当以其作用的有效性为核心，而该制度是否有效的衡量标准是独立董事的功能定位。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。