害羞使他处于劣势。

Being shy puts him ___at ___a ___disadvantage.

这些孩子在教育方面处于劣势。

These children are ___at ___a ___disadvantage in terms of education.

没有适当的训练，她在比赛中感到处于劣势。

Without proper training, she felt ___at ___a ___disadvantage during the competition.