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1. mistletoe noun [uncountable]
原句: But the impulse to give a little more-maybe too much-is more traditional than mistletoe.
意思: a plant with small shiny white berries that grows on other trees and is often used as a decoration at Christmas
字源: Old English misteltān, from mistel ‘mistletoe’ (of Germanic origin, related to Dutch mistel and German Mistel) + tān ‘twig’.
例句: He doesn't believe the tradition of kissing under the mistletoe.
2. genetic adjective
原句: Using the Stanford Human Genome Center to study genetic variations in almost 1,000 individuals from 51 populations.
意思: connected with genes (= the units in the cells of a living thing that control its physical characteristics) or genetics (= the study of genes )
字源: mid 19th cent. (originally relating to a common origin): from genesis, on the pattern of pairs such as antithesis, antithetic.
例句: There are about 4 000 inherited human genetic diseases.
3. exodus noun
原句: Like the early exodus out of Africa.
意思: a situation in which many people leave a place at the same time
字源: early 17th cent.: from Greek exodos, from ex- ‘out of’ + hodos ‘way’.
例句: The play was so awful that there was a general exodus from the theatre at the interval.
4. precision noun [uncountable]
原句: A far higher level of precision than in previous studies.
意思: the quality of being exact, accurate and careful
字源: mid 18th cent.: from French précision or Latin praecisio(n-), from praecidere ‘cut off’, from prae ‘in advance’ + caedere ‘to cut’.
例句: He organized the team with military precision.
5. indigenous adjective
原句: Share genetic similarities with people indigenous to South and Central America.
意思: belonging to a particular place rather than coming to it from somewhere else
字源: mid 17th cent.: from Latin indigena ‘a native’ + -ous.
例句: The reserve supports a wide range of indigenous species.