1.
Research on Domestic Sewage with Multi-Grading Drop-Aeration Biofilm Process;
多级重力跌水曝气生物膜法处理生活污水研究
2.
Research on Efficiency of Areation and its Effecting Factors with Multi-Grade Drop-Aeration Process;
多级重力跌水中充氧效率及其影响因素研究
3.
Disslove Oxygen Experimentation Reasearch of Living Waste Water Treatment in Mountatinous AreaTrail Station with Supplying Atmosphere of Gravity Dropping Water and Dripping Filtration;
重力跌水滴滤曝气法处理山区铁路站区生活污水溶解氧变化的试验研究
4.
New type of eliminating energy pool out-flow scouring experiments of rapid chamfer falling guttery for highway
公路排水跌坎急流槽新型消力池出流冲刷试验
5.
He had a nasty tumble.
他重重地跌了一跤。
6.
Anything that is dropped falls towards the centre of the earth because of the pull of gravity.
物体脱手即向地心方向跌落是由于重力吸引的缘故。
7.
Once he fell under their weight and lay patiently until he could gather his strength.
有一次他在重压下跌倒了，他耐心地躺在地上，积蓄力气。
8.
ON THE DYNAMIC LOAD ACTING ON THE BED ROCK BY A TRAJECTORY JET AND THE PROTECTION OF THE BED ROCK
关于挑跌流对河床的动水压力及基岩的防护问题
9.
Numerical Simulation of Influence of Intake Angle on Hydraulic Characteristic of Energy Dissipater with Step-down Floor
入池角度对跌坎型底流消能工水力特性影响的数值模拟
10.
He jarred his back badly when he fell.
他这一跌, 背部 得很重.
11.
The prices for fruit have begun to come down.
水果的价格开始下跌。
12.
She tripped over and landed in puddle.
她绊了一下跌在水潭里。
13.
She tripped over and landed in a puddle.
她绊了一下,跌在水坑里。
14.
They are at their lowest level in thirty years.
跌至30年来的最低水平。
15.
brace one's feet to keep from falling
用力叉开两腿以免跌倒
16.
The eagles who flapped their mighty pinions for a while came crashing heavily to earth.
鼓动有力的翅膀的雄鹰有时尚会重重地跌到地面上，它们呼呼振动翅膀的声音使我们头晕眼花。
17.
Real estate prices have plummeted who interests? Family assets or stock prices not?
房价下跌谁利益受损?家庭资产缩水房价跌不得?
18.
"Is it possible you don't know the saying that "the moon waxes only to wane, water brims only to overflow,"and "the higher the climb the harder the fall"? "
"你如何连两句俗语也不晓得?常言"月满则亏,水满则溢",又道是"登高必跌重"."