2024年4月23日发(作者：)

unit1单词讲义

harm (名词/动词)

中文意思：伤害，损害

英文释义：physical injury or damage to someone or something

词源：来自古英语的"harm"，意为“伤害”

例句：The medicine may do more harm than good.

固定搭配：do harm to, cause harm to, e to no harm

近义词：hurt, damage, injure

soil (名词)

中文意思：土壤，泥土

英文释义：the upper layer of the earth's surface in which plants grow

词源：来自古英语的"sōl"，意为“污垢，土壤”

例句：The soil is rich in nutrients.

固定搭配：loam soil, clay soil, sandy soil

近义词：earth, ground, dirt

ecosystem (名词)

中文意思：生态系统

英文释义：a munity of living and nonliving things interacting as a unit

词源：来自希腊语的"oikos"（房子）和"systema"（系统），意为“居住的地方或环境”

例句：The Amazon rainforest is one of the most diverse ecosystems on Earth.

固定搭配：ecosystem services, aquatic ecosystem, terrestrial ecosystem

近义词：biome, environment, habitat

overseas (副词/形容词)

中文意思：海外的，国外的

英文释义：in or to a foreign country; beyond the seas

词源：来自中古英语的"over see"，意为“在……之上”

例句：He works overseas for a multinational pany.

固定搭配：overseas investment, overseas study, overseas travel

近义词：foreign, international, abroad

region (名词)

中文意思：地区，区域

英文释义：a particular part of a country or the world with its own characteristics

词源：来自拉丁语的"regionem"，意为“边界，范围”

例句：The region is known for its beautiful landscapes.

固定搭配：economic region, cultural region, political region

近义词：area, zone, district

continent (名词)

中文意思：大陆，洲

英文释义：one of the seven main landmasses on Earth that are separated by oceans

词源：来自拉丁语的"continens"，意为“连续的，包括在内的”

例句：Asia is the largest continent in the world.

固定搭配：continental shelf, continental climate, continental drift

近义词：landmass, massif, tectonic plate

length：

词性：名词

中文意思：长度，长短

英文释义：The measurement of how long something is.

词源：来自古英语 "leng" 和 "th"，意为“长”。

例句：The length of the rope is 10 meters.

固定搭配：at length（最后，终于），length of time（时间的长度），length of stay（停留的时

间）

近义词：distance, extent, duration

biodiversity：

词性：名词

中文意思：生物多样性

英文释义：The variety of life in different ecosystems on Earth.

词源：由 "bio"（生命）和 "diversity"（多样性）组成。

例句：Protecting biodiversity is essential for the health of our planet.

固定搭配：biodiversity hotspot（生物多样性热点），biodiversity loss（生物多样性丧失），