Nitrogen manuring is essential to get a good yield of cut herbage.为了获得刈割牧草良好的产量,使用氮肥是极为重要的.Fertilizers modify the composition of herbage.肥料可改变牧草的组成.The correlation was found between soil moisture and herbage coverage was...
一驶出内防波堤，我们就扬起了所有的船帆。Once outside the inner breakwater, we began to unfurl all the sails.在防波堤后面挖泥船正在工作.Back of the breakwater the dredger was working.他们以乱石基巩固防波堤.They riprapped the breakwater with stone....