Jack is not available for the job; he has other work.
杰克现在没空干这份工作,他有别的活要做。
That man is not available for the job. He has other work.
那个人无暇做这份工作,他有别的工作要做。
"Most of the work has been done on birds and other terrestrial animals, " he says, adding that a lot of that work has been artificial experiments, not studies of creatures out in the wild.
他补充说很多工作都是人工实验,并不是研究野外的动物。
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