Early settlers built frames of spruce, maple and pine.早期的定居者用云杉木、枫木和松木建造屋架。It was made of soft lumber, spruce by the look of it.其制作材料是软木，看起来像是云杉。He looked spruce in his best clothes.他穿了最漂亮的衣裳,看来很神气....
“ 最优 ” 的弱解是在测试空间和试验空间重合时得出的.The " optimum " weak form is the one for which the trial and test spaces coincide.诚然,对其成员国来说是最优的卡特尔,对世界来说未必是最优的.The cartel that is optimal for its members is not optimal for the world, of cour...