1·Bullets will be plucked from biathlon targets and recycled to keep the lead from poisoning ground water.
子弹将从冬季两项的射击目标上取出并回收，以防止铅污染地下水。
2·Major water Supply: Local ground water.
主要水源：当地地下水。
3·But because of this very low level tritium getting into the ground water and migrating it shut the laboratory down.
但是由于这个非常低标准的氚，进入到地下水里，迁移了水，关闭了实验室。
4·But humans aren't the only ones that rely on this valuable resource - numerous plants and animals are sustained by this ground water, many of which are endangered.
但是，不仅仅只有人类依赖于这些宝贵的资源，许多濒临灭绝的动植物也要靠这些地下水维持生命。
5·Beijing's ground water is going through a crisis.
北京的地下水正在经历一场危机。