HAIR: Long, shining, straight or slightly wavy.

毛发：长毛，光亮，直毛或者微微弯曲。

youdao

The hair you'll need: Straight or slightly wavy hair, fine or thick will work.

这种发型你需要：直头发是必须的。细或粗都没有问题。

youdao

Lily looks so natural with her pixie crop, it's hard to imagine her with those slightly boring wavy lengths she sported in her early 20s.

莉莉小精灵似的短发看起来那么自然，很难想象她20岁出头的时候是顶着一头略显沉闷的波浪长发。

youdao

Instead of being flat, the glass is slightly wavy (somewhat like the glass a shower stall), which more effectively focuses the light on the underlying solar cells.

FORBES: U.S. Army Dedicates World's Largest Low-Concentration PV Facility