The river slows on the flat bottom.

河水在平坦的河床上减慢了流速。

youdao

We cleaned 12 small size circular extractors, 12 flat bottom flasks, some collecting liquid bottle and burettes.

本次清洗了12个小号循环萃取器，12平底烧瓶，以及一些集液瓶、滴管等仪器。

youdao

So engineers added details such as a gently sloping rear hatch, a flat bottom and small creases and fins that manage airflow.

因此工程师们添加了例如小坡度后盖、平整的底板以及能控制气流的小型的褶皱和鳍翼之类的细节设计。

youdao

Flat-bottom boats have carried eighteen million cubic yards of dredged material to the island.

VOA: special.2009.10.06

It sits flat on the ground with the bottom open to the earth.

VOA: special.2010.07.13

Cristal is one of the oddest looking bottles on the market with its clear bottle, flat bottom and cellophane wrapping.

FORBES: From Tsars to Rap Stars,The Story Behind Cristal Champagne

"A lack of coastal irregularities, " such as substantial barrier islands or hills, and the Gulf of Mexico's flat bottom make southern Louisiana "ideal for wave damage, " according to the National Weather Service Web site.

CNN: Storm surge the fatal blow for New Orleans

The flat-bottom boat balanced precariously just barely above water level, a skilled rower standing and pushing gondola-style from the back.

BBC: Safari by water in southern Africa