fractional

1. ADJ If something is fractional, it is very small in size or degree. 微不足道的[usu ADJ n]

...a fractional hesitation. ...一点儿踌躇。

2. fractionallyADV [ADV group]

Murphy, Sinclair's young teammate, was fractionally behind him. 辛克莱尔的年轻队友墨菲紧随其后。