1. Insulated bottles with a vacuum or air gap between inner and outer walls, designed to keep liquids hot or cold for extended periods
We packed vacuum bottles filled with hot coffee for the camping trip.
Embalamos garrafas térmicas cheias de café quente para a viagem de camping.
2. Containers used for storing and transporting beverages at desired temperatures
The vacuum bottles kept the tea hot throughout the day.
As garrafas térmicas mantiveram o chá quente durante todo o dia.