by choice

of one's own volition

出于自己的选择

of one's choice

that one chooses or has chosen

自选的

the college of her choice.

她自己选中的大学。

of choice

Preferred above others of the same kind or set

优先选择的：在同一类或同一组中比别的更受欢迎的

“the much used leveraged buyout as the weapon of choice”(&b{Alison Leigh Cowan})

“把举债经营、全部收买的老办法当作特别武器”(&b{艾利森·利·考恩})