1、His grandiloquent speeches were filled with empty promises.
他浮夸的演讲充满了空洞的承诺。

2、The politician's grandiloquent style of speaking impressed the crowd, but many doubted his sincerity.
那位政治家夸张的演讲风格给观众留下了深刻的印象，但许多人对他的真诚表示怀疑。