Every so often a supporter will testify to your good work via a wall or blog comment.(時不時的，會有支持者通過留言板或者博客評論表揚你們的卓越工作。)

The papers Newton left behind testify to the incredible powers of concentration of the genius who opened the door to the age of technology.(牛頓留下的研究論述證明了這位開啟科技時代大門的天才擁有驚人的專注力。)

I can testify to his honesty.(我可以為他的誠實作證。)

Somehow these feather blizzards, more even than the legions of birds that generate them, testify to the exuberance of life on South Georgia.(這些羽毛象暴風雪一般，較之蛻下它們的企鵝軍團更為密集壯觀，也更能印證出南喬治亞島的勃勃生機。)

I can testify to his innocence.(我可以證明他無罪。)

Lincoln's legal papers testify to a diverse and profitable practice.(林肯的各種律師文件驗證了林肯在律師這行業參與的多項工作和他獲得的利益。)

Hundreds of others are more obscure in their meanings and testify to the amazing specialization in medieval arts, crafts and functions.(其他成百上千的詞在含義上更加模糊，證明了中世紀藝術、工藝和功能的驚人專業化。)

Boatloads of desperate Senegalese men still arriving illegally in Europe testify to the scarcity of decent jobs.(絕望的塞內加爾人仍在一船一船的偷渡歐洲也證實了其國內體面工作的稀少。)

Sedimentary rocks such as sandstone also testify to the quicker days of yore.(諸如砂巖這樣的水成巖同樣表明：昔日更短。)

we speak of what we know and testify to what we've seen, yet you do not receive our testimony.(我們所說的，是我們知道的，我們所見證的，是我們見過的，你們卻不領受我們的見證。)