Crossing your arms, standing behind a podium or chair, or talking to someone from behind a computer monitor are all examples of blocking, which prevents a real connection from taking place.

把手臂交叉，站在讲台或椅子的后面，对坐在电脑显示器后面的那个人交谈，这些都是阻挡交流的例子，这样就不能产生一个真正的联系。

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Israelis also monitor the crossing via closed-circuit television.

CNN: Gaza crossing to reopen after protest

The Egyptian government and the Palestinian Authority tried to persuade Israel to let a third party monitor the main crossing point between Egypt and the Gaza strip, which thousands of Gazans surged across last week.

ECONOMIST: Another hurricane

Europeans will help monitor that border crossing.

NPR: New Gaza Agreement Met with Cautious Optimism