已经围垦的，应当按照国家规定的防洪标准进行治理，有计划地退地还湖。
Where such land is already reclaimed, it shall be brought under control in conformity with the standards set by the State for flood control and changed to lake again in accordance with plans.
参议院对多德的公开指责使他处于困境，同时也让他大为恼火，他不想不战而退地放弃他的席位。
Dodd was hurt and angered by the Senate censure and not ready to give up his seat without a fight.
作者称，伴随着生物原料转变成塑料成品的整个过程，这些影响主要来自于化肥，杀虫剂的使用以及退地还耕的举措。
These impacts came largely from fertilizer use, pesticide use and conversion of lands to agricultural fields, along with processing the bio-feedstocks into plastics, the authors reported.
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