1. They screwed the caps back on to their thermos flasks, and jammed down the lids of their now empty plastic sandwich containers.

2. Hot soup, stew or casserole in a thermos flask, plus a roll - but no butter or margarine.

3. I would also have managed to acquire a Thermos flask.

4. They pulled out a book and a thermos flask, and settled in for the long night ahead.

5. We brought tea in a thermos flask.

6. I broke the Thermos flask.

7. This kind of thermos flask keeps water hot for 24 hours.

8. This time, there was no note, only a thermos flask of lentil soup on the doorstep.sentencedict .com

9. Before using the electric thermos flask please read the following instructions carefully.

10. The case contained only his sandwich box and his thermos flask of coffee.

11. Complete line of thermal insulation and pots, jars, pots and thermos flask.