提示：点击例句中的单词，就可以看到词义解释

Beijing has stepped up its lobbying before today 's meeting .

北京方面在今日会晤之前已经加大游说努力。

Police appeared to have also stepped up their presence around local business .

警方似乎也加大了在当地商铺附近的巡逻力度。

Then the central banks stepped in .

在此种情况下，中央银行介入。

Illegal organ traffickers have stepped in to fill that gap .

这一差距使从事器官交易的非法分子有机会介入该领域。

France stepped up security measures at its embassies and cultural centres in 20 countries as a precaution .

法国在20个国家的大使馆和文化中心加强了安全措施作为防范。