The petition could be just a trial balloon to test the administration's reaction.

这次上诉可作为测试政府反应的一个试行方案。

If the enemy tried to shoot that trial balloon, the men would not go up.

如果敌人射击那只气球的话，他们就不再上去了。

Sounding out is also used, where trial balloon ideas are sent to the other side to test their reaction.

也会用到试探法，就是放出实验性的假消息给对方，测试他们的反应如何。

Even as RenRen is using this IPO to float its shares into the U.S. market, Wall Street seems to be using it to float a trial balloon.

人人网正在利用此次IPO在美国股市上大肆散发其股份，另一方面，华尔街却似乎把人人的IPO看成了一个试验气球。

Even as RenRen is using this IPO to float its shares into the U. S. market, Wall Street seems to be using it to float a trial balloon.

人人网正在利用此次IPO在美国股市上大肆散发其股份，另一方面，华尔街却似乎把人人的IPO看成了一个试验气球。