当很多国家禁止通过PGD选择胎儿性别的时候，它在美国没有碰到问题。
While many countries have banned the use of PGD for gender selection, it is permitted in the U.S..
对于那些想禁止通过网络运行托管代码的人，Shawn提出了如下建议。
For those who want to forbid running managed code from network locations Shawn advises.
所有卡车已被禁止通过乔治·华盛顿大桥，其它桥梁和隧道也加强了安检。
All lorries were being stopped on George Washington bridge and there was increased security at all other Bridges and tunnels.
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