From the age of 15-21 he took on many different identities and pulled them off with aplomb.

从 15 岁到 21 岁， 他拥有许多不同的身份， 并沉着应对。

Working these examples into an optional essay or the interview is perfectly acceptable if done with aplomb.

如果泰然自若，将这些成一篇可的论文或完全可以接受的。

Here, you try but fail to resist the urge to mention that Frida herself didn't really have the structural integrity to make the trip of life, but she did so anyway, and with aplomb.

在这里， 你图但无法抗拒提及弗里达本人并不真正具备完成人生旅程的结构完整性，但她无论如何还泰然自若地这样做了。