In the UK, a significant proportion of children have not only experienced drinking alcohol by the time they are allowed to purchase an alcoholic beverage (i.e. before 18 years of age), but are likely to have been drunk at least once in the last 4 weeks.
btw. âº 1  written abbreviation for by the way: used, for example in emails, when you are writing something that relates to the subject you are discussing, but is not the main point of the discussion: âº 2  written abbreviation for by the way: used in an email, etc. to add an extra comment, piece of information, or question:
Definition - What does British Thermal Unit (BTU) mean? A British thermal unit (BTU) is a standard measure of thermal energy. A single BTU is the amount of energy required to increase the temperature of one pound (avoirdupois)of water by one degree Fahrenheit (F).