我们需要警察维持秩序。
更糟糕的是，没有警察维持秩序，也看不到有戴着蓝头盔的官员。
To make it worse, there were no police to keep them in check. Not one blue-helmeted officer in sight.
让他惊讶的是，那儿没有警察维持秩序，他可以悠闲地在观光人群中漫步。
He was amazed, that there was no police control during the period and he could easily take a stroll apart from the visiting group.
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