He said, even though Washington has never stopped investigating, al Qaeda cell members still managed to infiltrate the border of the United States disguised as tourists, businessmen or students.

• 他说，即使华盛顿一直未停止追缉，盖达组织细胞佯装观光客、商人或学生的恐怖分子，仍设法渗透到美国边界。