Builders must fasten down roofs of newly-built homes more securely.建造工人必须把新建房屋的屋顶固定得更牢靠些。They fasten with a drawstring.它们是用拉绳系紧的。Fasten your seatbelts, please.请系好安全带。...
The people there have been drenched.那边的人都被雨淋透了。They were getting drenched by icy water...他们被冰冷的水浇透了。The rain fell in torrents insomuch that we were drenched.倾盆大雨使我们变成落汤鸡.Thoroughly drenched and chilled , the two adventur...
根瘤含有亚铁和亚铁一氧化豆血红蛋白的混合物.Nodules contain a mixture of ferrous and ferrous - oxy leghemoglobin.在PH值 7.0―7.5时,一经曝气亚铁离子很容易转化为铁离子.Conversion of ferrous to ferric iron occurs readily upon aeration at PH 7 . 0 - 7. 5.第三个例子是前章提到的硫...
Scattered groans and whoops broke out in the crowd.人群里不时发出几声抱怨和欢呼。There were loud groans when he started to sing.他刚开始歌唱时有人发出了很大的嘘声.It was a weird old house , full of creaks and groans.这是所神秘而可怕的旧宅,到处嘎吱嘎吱作响....