示例#1
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 public Sugar(Beverage b)
 {
     beverage = b;
 }
示例#2
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 public Soy(Beverage b)
 {
     beverage = b;
 }
示例#3
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 public SteamedMilk(Beverage b)
 {
     beverage = b;
 }
示例#4
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 public Whip(Beverage b)
 {
     beverage = b;
 }
示例#5
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 public Mocha(Beverage b)
 {
     beverage = b;
 }