Earth is experiencing its "sixth great extinction event" with disease and human activity taking a devastating toll on vulnerable species, according to a major review by conservationists.
Sixth, we should step up cooperation on major international and regional issues.
第六，加强两国在重大国际和地区问题上的合作。
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Mathematical methods for designing high homogeneous NMR Superconducting-magnets, giving the major parameters of sixth order compensated solenoids with minimum winding volume.