Limestone is often used in building construction.石灰岩常用于建筑.Cement is made from limestone.水泥是由石灰石制成的.The limestone is sufficiently fissured for tree roots to have breached the roof of the cave.石灰岩上有许多缝隙，故而树根能从岩洞顶部长出来。...
Many of them are low coral or limestone hideaways of palm trees, trade winds, and sand.许多岛屿是低矮的珊瑚,或隐匿着棕榈树, 信风, 和白沙的石灰石....a rich and deep vein of limestone.储量丰富的深层石灰石矿脉The channel is overlain by siltstone and lenticular ...
我们被洗了脑，认为人人都是平等的。We were brainwashed to believe we were all equal.我们在各个方面都是平等的。We are equal in every way.长期以来他们一直致力于争取种族平等的运动.They have long been involved in a crusade for racial equality....
I even began to exploit him in subtle ways.我甚至开始巧妙地利用他。Some of the designs are subtle, some gloriously OTT.有些设计含蓄精妙，有些夸张绚丽。The tactics employed can range from overt bullying to subtle emotional blackmail.从公然威吓到微妙的情感胁迫，各种...
种间杂交的主要障碍是F1代的不育性.A major barrier to interspecific hybridization is sterility in the F 1 progeny.那是一株杂交的四季开花的蔷薇.That is a hybrid perpetual rose.骡子是一种杂交的变态产物, 本来是不该饲养的.Mules are misbegotten, unnatural critters and it ough...
我们用泵将石膏料浆打到一块用堤围起来的空地中.The gypsum slurry is pumped into a diked area.他们用泵把水打进水库.They pumped water into the reservoir.你需用泵着实抽吸几分钟,才能把油箱灌满.You will need to pump hard for several minutes to fill the tank....