The U.N. imposed an oil embargo on Haiti. 联合国禁运石油到海地。 The U.N. lifted sanctions against South Africa. 联合国已撤销对南非的经济制裁。 Our budget is already stretched to the limit. ;我们的预算已拉满弓。 They pulled the switch on the project. 他们不再支持那项工程。