Among the signatories of the warning was Bob Johnson, the originator of the "ecological footprint" concept, which measures the total amount of environmental input needed to maintain a given lifestyle.
It is a necessary input for designing matrix stimulation treatments of multiple layers, if only to account for and potentially take measures to control crossflow between zones.
如果只是说明并且可能采取措施来控制地层间的交叉流动，那么它必须输入，以便设计基质增产措施。
3
Starting from the current status of college English listening teaching, this paper, according to input and output theory offers some measures of college English listening teaching reform.