a swimmer doing the crawl

Don't worry if your baby seems a little reluctant to crawl or walk...

如果你的宝宝不爱爬也不爱走，不要担心。

...rock-hard earth littered with rubbish and crawling with vermin.

丢满垃圾、爬满虫子的坚硬土地

Her hair was crawling with lice.

她的头发上爬满了虱子。

The traffic slowed to a crawl.

来往的车辆放缓速度慢慢前行。

There's a spider crawling up your leg.

有只蜘蛛正顺着你的腿往上爬。

I began to crawl on my hands and knees towards the door...

我开始手脚并用朝门口爬去。

She's always crawling to the boss.

她对老板总是谄媚奉承。

From of old, the impression in people memory is mysterious and Qinghai-Tibet Platean is horrible.

自古以来, 青藏 高原在人们心目中的印象神秘而恐怖.

Only micronic particulates penetrate to the depth of the lung.

只有微细粒子穿透到肺深部.

The particulates have more acidic pollutants with strong acidity and have the corrodibility to grottoes.

细粒子中有较多的酸性污染物并比粗粒子酸性强，这些细粒子对石窟有侵蚀作用。

Particulates scatter the sun's rays and reduce the amount of sunlight that reaches the ground.

微粒分散了阳光,减少了到地面的阳光的数量.

Recycling of suspended particulates by the interaction of sea-land breeze circulation and complex coastal terrain.

海陆风环流与复杂海岸地形之间的交互关系对悬浮粒子的再循环作用.

Emissions of greenhouse gases, carbon monoxide and particulates could all be significantly reduced.

温室气体 、 一氧化碳和微粒的排放全都可以显著降低.

A craba fork, and seven seashells.

拨浪鼓上挂铃铛,七个海螺 、 贝壳要找齐.

She sells seashells at the seashore. She can say it very well.

她在海岸出售海贝壳. 她能说得非常好.

Many people like to collect seashells because they are so beautiful.

各有各的颜色和图案,非常美丽,故很多人收集珍藏.

Small seashells were once used as a primitive form of money.

小贝壳曾经被当作简单的钱币使用.

Small seashells were often used as a primitive kind of money.

小贝壳常被用作简单的货币.

The shells she sells are seashells, I'm sure.

我确定她卖的贝壳是海贝壳.

Small seashells have sometimes been used as a primitive kind of money.

小贝壳有时用作简单的钱币。