The receptionist raised her forefinger, signaling she would be off the phone shortly.

接待員舉起食指，示意她很快就會講完電話。

Please place your forefinger on the scanner to clock in at the front entrance.

請將食指放在掃描器上，在正門打卡上班。

The tour guide traced our route on the map with his forefinger before we boarded.

登車前，導遊用食指在地圖上比劃我們的路線。