名 silk，a threadlike thing，a tiny bit，trace；量 （重量单位） si, a unit of weight (=0.0005 grams)，thread ；

[例句] 格雷丝轻轻敲了敲卧室的门，走了进去。 Grace tapped on the bedroom door and went in.

[例句] 我认为新闻记者不应当有丝毫偏见。 I believe that a journalist should be completely objective.