complimentary
US /ˌkɑːm.pləˈmen.t̬ɚ.i/
UK /ˌkɑːm.pləˈmen.t̬ɚ.i/

1.
2.
免费的, 赠送的
given or supplied free of charge
:
•
Guests receive a complimentary breakfast.
客人可享用免费早餐。
•
The hotel offers complimentary Wi-Fi to all its guests.
酒店为所有客人提供免费无线网络。
免费的, 赠送的
given or supplied free of charge