/ˌes ˈaɪ ||; ˌɛs ˈaɪ/abbr (used to describe units of measurement 指计量单位) International System (from French ‘Système International’) 国际单位制（源自法文Système International）: SI units 国际单位 ☞Look at Expressions using numbers at the back of the dictionary. 参看本词典末数词用法部份。