Earthworms

Earthworms burrow deep into the soil.

蚯蚓钻土很深。

Dieldrin is related to aldrin, and its toxicity to earthworms is similar.

狄氏剂与艾氏剂有关,对蚯蚓的毒性是相似的.

Earthworms do the important job of aerating the soil.

蚯蚓做了使土壤透气的重要工作。

Earthworms burrow deep into the subsoil.

蚯蚓深深地钻进底土.

Earthworms consume large amounts of soil, and produce a rich humus, perfect in texture.

蚯蚓吃下大量土壤，排出肥力丰富、物理结构理想的腐殖质。

Earthworms comminute the mineral fraction of soils.

蚯蚓粉碎土壤中的无机物碎片.

Many species of earthworms produce cocoons through the year.

许多种蚯蚓全年产茧.

Earthworms may be instrumental in dispersing fungi or bacteria.

蚯蚓可能是散布真菌及细菌的工具.

Such addition of earthworms to soil seems particularly promising.

将蚯蚓引入这种土壤特别有效.

Not much information is available about the structure of populations of earthworms.

关于蚯蚓种群结构方面有价值的报道不多.

Most megadrile earthworms reproduce by normal cross - fertilization.

大多数巨蚓的生殖是正常异体受精.

Usually earthworms have two or more pairs of spermathecal pores.

蚯蚓常常有两对或多对受精囊孔.

The numbers of earthworms changed according to the phase of the rotation.

蚯蚓的数量因轮作状况而有改变.

Earthworms crawled along the path.

蚯蚓在路上爬.

Earthworms may produce antibiotic substances.

蚯蚓可以产生抗菌物质.