The exciting forces will change when the technical states of diesel engine change. So to measure the body vibration can felicitate the monitoring of diesel engine technical states of.(在柴油機使用過程中技術(shù)狀態(tài)的改變將導(dǎo)致激振力發(fā)生不同的變化，因此測量機體激振信號有利于對柴油機技術(shù)狀態(tài)進行監(jiān)測。)

I felicitate the day I found you.(我慶幸我找到你的那一天。)

I ever felicitate myself secretly that I won't make impertinent remarks or be hurt by them.(我曾經(jīng)暗自慶幸，我不會出言不遜也不會為言語所傷。)

Once being eager to stay with someone forever, later, we would felicitate ourselves on leaving him/her. During those transient days, we thought we loved him/her deeply.(曾經(jīng)渴望與一個人長相廝守，后來，多么慶幸自己離開了?曾幾何時，在一段短暫的時光里，我們以為自己深深的愛著的一個人。)