他在婚礼上的致辞恰到好处，赢得了宾客们的掌声。

His ___felicitous speech at the wedding won applause from the guests.

她在演讲中使用了恰当的比喻，给听众留下了深刻印象。

Her ___felicitous use of metaphors in the speech left a deep impression on the audience.