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And Susheng Gan, a molecular biologist at Cornell University, says the mutant type used by the group shows only slightly delayed leaf senescence, making it a less-than-ideal model to work with.

甘肃升susheng Gan是卡奈尔大学的分子生物学家，说改组使用的变异物种只稍微推迟了树叶的衰老表象，这不是很理想的模型。

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Boeing will take several months to catch up with work delayed last October when production lines had to be halted because of a shortage of parts.

ECONOMIST: Aircraft industry

The opening of the playground at Corinium Via, in Cirencester, had been delayed for the work to be carried out.

BBC: The fenced off playground

Crops have been destroyed, it is true, and some people have not been able to get to work (or have no more work to go to), but much production will be delayed rather than lost altogether.

ECONOMIST: The continent awash