balloon to
英 美
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。
Scientists tried to send a balloon to Venus.
科学家们试图向金星发射一个气球。
They can help you pull down the basket or tie the balloon to the ground car until you are ready to fly.
他们可以帮你拉下篮子,或者把气球系在地上的汽车上,直到你准备好起飞。
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