a rule of thumb

rule of thumb

An approximation; a suggested method or guideline. A good rule of thumb is to plant your seedlings around the end of May.

a rule of thumb

COMMON A rule of thumb is a general rule about something which is right in most cases. As a rule of thumb, drink a glass of water or pure fruit juice every hour you are travelling. A good rule of thumb for any type of studio photography is to use no more light sources than are strictly necessary. Note: This expression probably dates back to the use of the first joint of the thumb as a unit of measurement.

a rule of ˈthumb

a quick, practical, but not exact, way of measuring or calculating something: As a rule of thumb you need a litre of paint to every 12 square metres of wall.This phrase may come from the fact that people often used their thumbs to estimate measurements.

词组	a rule of thumb
释义	a rule of thumb rule of thumb An approximation; a suggested method or guideline. A good rule of thumb is to plant your seedlings around the end of May. See also: of, rule, thumb Farlex Dictionary of Idioms. a rule of thumb COMMON A rule of thumb is a general rule about something which is right in most cases. As a rule of thumb, drink a glass of water or pure fruit juice every hour you are travelling. A good rule of thumb for any type of studio photography is to use no more light sources than are strictly necessary. Note: This expression probably dates back to the use of the first joint of the thumb as a unit of measurement. See also: of, rule, thumb Collins COBUILD Idioms Dictionary, 3rd ed. a rule of ˈthumb a quick, practical, but not exact, way of measuring or calculating something: As a rule of thumb you need a litre of paint to every 12 square metres of wall.This phrase may come from the fact that people often used their thumbs to estimate measurements. See also: of, rule, thumb Farlex Partner Idioms Dictionary See also: rule of thumb rule with a velvet glove bite (one's) thumb at exception be the exception that proves the rule rule the school unwritten unwritten law unwritten rule on the bench References in periodicals archive In a pattern that emerges repeatedly from Inland's data, it's the biggest papers -- those over 100,000 circulation -- that are closest to a rule of thumb. But even those newsrooms are slightly "overstaffed," at 1.3 FTEs per thousand. Newspapers All Thumbs On 'Rules' Again, as a rule of thumb, the best time to prune trees is during their dormant season. As a rule of thumb, the best time to transplant any tree is during its dormant season, the winter months. Tree doctor It's a rule of thumb that if it grows locally, it's going to be good for you and it's going to be appropriate because it will grow at the right season. Nutrition and HIV Infection: Experience in Zimbabwe: Interview with Lynde Francis If a rule of thumb is utilized to develop a range of value for a small closely held business, one should be careful to understand what the rule of thumb proports to value. Alternatives to business valuation rules of thumb for small businesses
随便看	have occasion to do something have on have (one) bang to rights have (one) by the balls have (one) by the short and curlies have (one) cold have (one) dead to rights have one eye/half an eye on something have one eye on (someone or something) have one foot in the grave have one foot on a banana peel have one for the worms have (one) in fits have (one) in (for something) have (one) in stitches have one in the oven have (one) on a short leash have (one) on the run have (one) on toast have (one) over a barrel have one over (the) eight have (one) rolling in the aisles have (one's)/a beady eye on (someone or something) have (one's) act together have (one's)/an eye out for (someone or something)