bottom

音標(biāo)發(fā)音

bottom的基本意思是“底部”“基部”“下端”“末尾”,多指物體的最下的部分,只用作單數(shù)可數(shù)名詞; 引申可指“(東西的)底”,“盡頭”“末端”“根源”“起因”“最無(wú)關(guān)緊要的部分”等。
bottom作“臀部”“屁股”解時(shí),常用于口語(yǔ)或非正式文體中,是可數(shù)名詞。
表示“在底部”通常用介詞at；指小容器的“底部”時(shí)也可用in；當(dāng)?shù)撞渴且粋€(gè)寬廣的平面時(shí)則可用on。

bottom用作動(dòng)詞時(shí)意思是“給…裝上底”,引申可指“降到最低”“對(duì)…尋根問(wèn)底”“為…提供根據(jù)”等。
bottom既可用作及物動(dòng)詞,也可用作不及物動(dòng)詞。用作及物動(dòng)詞時(shí),接名詞、代詞作賓語(yǔ); 用作不及物動(dòng)詞時(shí),多與副詞out連用。

Thebottomof something is the lowest or deepest part of it.
The bottom thing or layer in a series of things or layers is the lowest one.
Thebottomof an object is the flat surface at its lowest point. You can also refer to the inside or outside of this surface as the bottom.
If you say that the bottom has dropped or fallen out of a market or industry, you mean that people have stopped buying the products it sells.
The bottomof an organization or career structure is the lowest level in it, where new employees often start.
If someone is bottom or at the bottom in a survey, test, or league, their performance is worse than that of all the other people involved.
The lower part of a swimsuit, tracksuit, or pair of pyjamas can be referred to as the bottoms or the bottom.
The bottomof a street or garden is the end farthest away from you or from your house.
The bottomof a table is the end farthest away from where you are sitting. The bottom of a bed is the end where you usually rest your feet.
Your bottom is the part of your body that you sit on.
&rarrsee also rock bottom
You use at bottom to emphasize that you are stating what you think is the real nature of something or the real truth about a situation.
If something is at the bottom of a problem or an unpleasant situation, it is the real cause of it.
If you want to get to the bottom of a problem, you want to solve it by finding out its real cause.