这件防雨外套很轻便，下雨天穿它很合适。

This ___Philby is lightweight and perfect for rainy days.

作为音乐鉴赏的行家，他能仅凭几个音符就辨认出作曲家和作品。

As a music ___philby, he could identify the composer and piece with just a few notes.