More than 170 hectares were afforested, reducing water runoff from the hillsides.超过170公顷的土地已植有林木, 以减少雨水从山坡流下.At first the wooded hillsides muted the sounds.最初长满树木的山坡吸收了噪音。That forced peasant farmers to try to eke a livin...
He waxed lyrical about the skills and commitment of his employees.他津津乐道于员工的技能和敬业精神。The targets would not be achieved unless other departments showed equal commitment.除非其他部门同样努力，否则这些目标无法达成。It is an open question how long ...
ITQ - 27 is stable to calcination in air , absorbs hydrocarbons , and is catalytically active for hydrocarbon conversion.ITQ-27对于在空气中煅烧而言是稳定的, 可以吸附烃类,以及对烃转化具有催化活性.Any of three gaseous isomeric ethylene hydrocarbons , C 4...