They've promised to keep both we quality and the quantity of the 300 bicycles in conformity with the contract stipulations.
他们已承诺那300辆自行车的质量和数量一定与合同规定相吻合。
and having different effects. One poison acts on the nerves, the other on the blood.
不同毒蛇产生的毒液产生的效果不同,一种毒液作用于神经,另一种毒液作用于血液。