他说，比如，科学家曾经在火星上的很多地方发现曾有液态水存在的证据，而这是生物生存的必要条件。
For example, scientists have found evidence that there could be liquid water-which is necessary for life on earth-at many places on the Mars.
虽然语言并不一定是决定思维的必要条件，并习得说目的语的本族语者的思维模式。
Although language is not always a necessary condition for thought, the use of it is indispensable to the content, direction, and elaboration of particular thoughts.
据斯蒂芬。科维说，领导者要具备四个必要条件：他们必须能激发信任、明确目的、调整制度以及解放人才。
According to Stephen Covey, there are four imperatives for leaders: they must inspire trust, clarify purpose, align systems and unleash talent.
据斯蒂芬。科维说，领导者要具备四个必要条件：他们必须能激发信任、明确目的、调整制度以及解放人才。
According to Stephen Covey, there are four imperatives for leaders: they must inspire trust, clarify purpose, align systems and unleash talent.
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