With tighter lending rules placed on chinese buyers at home , many investors have gone abroad .

随着中国收紧购房贷款政策，很多投资者已转向国外。

Tighter regulations and lower debt ratings for the banks will probably make that business less profitable .

监管的收紧以及银行信用评级下调可能会使这块业务的盈利能力下降。

Washington has already demanded tighter regulation of chinese exporters .

华盛顿方面已经要求对中国出口商实施更严格的监管。

Tighter fiscal policy is brazil 's best defence against short-term economic trouble .

更紧缩的财政政策是巴西一直短期经济问题的最佳途径。

Yet the tighter squeeze has not made the iranians stop enriching uranium .

不过更严厉的制裁并没使伊朗停止浓缩铀的试验。