sexual reproduction
production of offspring through the joining of reproductive cells
n.L2 进阶重点B2
有性生殖
英文释义 reproduction in which reproductive cells join, combining genetic material to produce offspring
托福词汇
2,876 个单词与短语 · 21 个主题
词汇（105）
reptile
n. · B2 · L2animal such as a snake, lizard, turtle, or crocodile
爬行动物
resistant
adj. · B2 · L1able to withstand a disease, chemical, or other harmful influence
有抵抗力的；耐……的
root system
n. · B2 · L1all of a plant's roots considered together
根系
seed dispersal
n. · B2 · L2spread of seeds away from the parent plant
种子传播；种子散布
selective pressure
n. · C1 · L2environmental factor favoring some inherited traits
选择压力
sexual reproduction
n. · B2 · L2production of offspring through the joining of reproductive cells
有性生殖
species
n. · B1 · L1interbreeding group under the biological species concept
物种
survive
v. · B1 · L1stay alive through difficult conditions
存活；幸存
symbiosis
n. · C1 · L3close and persistent association between different species
共生（不同物种间密切而持续的关系）
terrestrial
adj. · C1 · L2living on land rather than in water
陆生的；陆栖的
territorial
adj. · B2 · L2defending an area against other animals
有领地意识的；护卫领地的
thrive
v. · B2 · L1grow or develop very well
茁壮生长；繁盛
tissue
n. · B2 · L1cells organized to perform a biological function
（生物的）组织
tolerate
v. · B2 · L1withstand an unfavorable condition without serious harm
耐受；能承受（不利环境）
vertebrate
n. · C1 · L2animal belonging to the group with backbones
脊椎动物