of necessity   (TTS發音)

necessarily ；unavoidably必然地；不可避免地

    With the Spring Festival coming soon， the traffic will of necessity become heavier. 隨著春節的到來，運輸必將更加繁忙。

    Being your lawyer，he will of necessity want to know all the details. 作為你的律師，他當然要了解全部細節。