"Cracking the Ocean Code" is about the work of scientist J.Craig Venter.

VOA: special.2009.03.25

So in the years just before 1637, the English court under James I and then later under Charles I -the English crown had been cracking down on the delivery of Puritan sermons in the church.

因此在1637年之前，詹姆斯一世以及,后来的查理一世，领导下的王庭,此时英国的王权已经在极力打击,清教徒训诫仪式的实行。

耶鲁公开课 - 弥尔顿课程节选

Economist Gianluca Benigno of the London School of Economics says cracking down on tax havens should not be an immediate concern.

VOA: standard.2009.04.02

Meanwhile,the Iranian regime has been cracking down on anti-government protests that erupted after June's disputed presidential election and flared anew last month.

VOA: standard.2010.01.04

Certainly the international regulatory environment is changing more governments now are cracking down much harder on foreign bribery,".

VOA: standard.2009.10.01

Throughout his speech, the prime minister promised further change and reform, including holding bankers accountable and cracking down on crime and anti-social behavior.

VOA: standard.2009.09.29

Military analysts believe Iran is wary of cracking down too hard, for fear of drawing in other militants from neighboring Pakistan and Afghanistan.

VOA: standard.2009.10.19

Illegal logging is down in part because export countries are cracking down on the problem.

VOA: standard.2010.07.28

The state is collaborating with the federal Bureau of Alcohol, Tobacco,Firearms and Explosives, known as the ATF, in cracking down on the cigarette black market.

VOA: standard.2010.08.11

So,cracking down on them is generally popular.

VOA: standard.2009.04.02

"In addition to cleaning up the mess, repairing the damage and cracking down on big oil companies, we also have to get serious about ending our dependence on oil and creating new sources of clean energy."

VOA: standard.2010.07.31

(THUNDER CRACKING) Stop!

VOA: standard.other