界
boundary; limit; field; kingdom (taxonomy)
Meanings
5 senses · 25 examplesnoun
boundary; border; limit
Used to indicate physical or conceptual dividing lines between areas or entities.
Shanxi and Shaanxi are bounded by the Yellow River.
The border issue between the two countries has been resolved.
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This river forms a natural boundary between the two cities.
We need to clarify the boundaries of our work.
Provincial boundaries are marked with red lines on the map.
noun
scope; range; sphere
Refers to a specific area, scope, or field of activity or knowledge.
This question is beyond the scope of my knowledge.
In the field of medicine, new technologies are constantly emerging.
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His research scope is very broad.
We should act within the scope permitted by law.
Her abilities have exceeded the limits of our imagination.
noun
circle; community; field
Refers to a community or group of people sharing the same profession, occupation, or characteristics.
People in the literary and art circles have a high opinion of this movie.
He enjoys a high reputation in the scientific and technological community.
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The women's community has made important contributions to social development.
People from all walks of life have expressed concern about environmental protection issues.
The sports community is actively preparing for the upcoming competition.
noun
kingdom (taxonomic rank)
technicalTechnical term in biology referring to the highest taxonomic rank, such as animal kingdom, plant kingdom, etc.
Organisms can be divided into the animal kingdom, plant kingdom, fungi kingdom, etc.
Kingdom is the highest rank in the biological classification system.
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Humans belong to mammals in the animal kingdom.
The plant kingdom includes all green plants.
In biological classification, phylum comes below kingdom.
noun
era (geological time unit)
technicalTechnical term in geology referring to a major division of geological time and corresponding rock strata.
The Phanerozoic Eon is divided into the Paleozoic, Mesozoic, and Cenozoic Eras.
The Mesozoic Era was the age when dinosaurs thrived.
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In geology, eon is above era, and period is below era.
Paleozoic strata contain abundant fossils.
The geological time division corresponding to era is called period.