下层的英文:
substratum
- Disadvantaged families
下层贫困家庭 - evergreen undershrub
常绿下层灌木 - Party activists with lower middle class pedigrees are numerous.
党内积极分子中中产阶级下层出身的很多。 - The salt water, being more dense, flows upstream under the fresh water which is flowing downstream
淡水在上层向下流动,比重更大的盐水在下层逆流向上。 - At the nadir of...
在…的最下层[最低处] - He belongs to the lower middle class.
他来自中产阶级下层。 - The lower deck is more convenient.
下层甲板更方便些。 - Tramps are in a low stratum of society.
流浪汉生活在社会的下层。 - Tramps are from the lowest stratum of society
流浪汉来自社会最下层。 - aristocrats who regarded the rabble with deep contempt.
对下层民众极其蔑视的贵族们
n. 下层;地基;根基
- "For soft substratum, dig out the top layer (5 - 10 cm thick), sort out the animals, identify and count them."
若是软基质,用小铲挖出表面5-10厘米厚的基质,找出砂泥中的动物,点算和鉴定。