免費
free (of charge);gratis;complimentary
展覽會～參觀。Admission to the exhibition is free (of charge)./～服務free service/～公路toll-free highway/～教育 free education;compulsory education/～匿名檢測free and confidential test /～入場free admission;be admitted gratis /～試用free trial/～送貨free delivery/～午餐free lunch/～學校free school/～醫(yī)療free health (or medical) service;free medical treatment/～贈送complimentary(copies);with the compliment of;give (or be given) as a gift/～宣傳品free publicity/～贈閱報紙freesheet