21.   In restaurants, asking for decaffeinated coffee often brings a stare of polite incomprehension.

a. + coffee >>共 312
hot 7.38%
black 6.05%
instant 5.25%
strong 5.07%
drinking 3.38%
free 2.67%
fresh 2.05%
decaffeinated 1.87%
colombian 1.87%
brazilian 1.69%
decaffeinated + n. >>共 13
coffee 56.76%
tea 10.81%
espresso 5.41%
bean 2.70%
beverage 2.70%
brand 2.70%
cappuccino 2.70%
crowd 2.70%
crystal 2.70%
mocha 2.70%
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