单词	at home with on
释义	at home with on adj.精通熟悉
随便看	substitution pattern substitution performance substitution permutation network substitution-permutation network substitution places Substitution: Player No.4 for No Substitution: Player No.4 for No.3 substitution point Substitution position of methylene group substitution principle substitution process substitution product substitution products substitution property substitution protein feed substitution pseudomorph substitution pseudomorphosis substitution rate substitution rate of adjunct materials substitution reaction substitution/rearrangement reaction substitution refrigerant substitution relationship substitution resources substitution right