底木

1.sill  

底的英语翻译：

a copy kept as a record; base; bottom; end; fundus; the truth of a matter
【医】 base; basement; bases; basi-; basio-; basis; batho-; bathy-; fimdi
floor; fundus; pavimentum; solum

木的英语翻译：

numb; timber; tree; wood; wooden
【医】 lignum; wood; xylo-