Appearances can deceive, ecologists caution, and many of these exotics may be considered acceptable only because no one has documented their harmful effects.
生态学家警告说，外表可能具有欺骗性，而且这些外来物种中可能有许多是为人接受的，只是因为没有人记载过其有害影响。
Yet appearances can deceive, ecologists caution, and many of these exotics may be considered acceptable only because no one has documented their harmful effects.
然而，生态学家警告说，这些表象可能并不是真的；而且，这些外来物种中有许多可能被认为是可接受的，只是因为没有人记载过它们的有害影响。
Creating whole new ecosystems that mix natives with transplanted exotics might be risky.
想要创造全新的生态系统来使本地物种和外来迁移物种混合是冒险的。
The spirit of literature which then saturated his being had nothing of the mustiness of library Morocco about it, but was fragrant with the scent of unknown exotics from over the seas.
那时候，渗透他身心的文学风气一点都没有图书馆里的摩洛哥山羊皮的霉味，而是具有一种来自海外的异国风味的芬芳。
They felled great thickets of rhododendrons to make way for more novel exotics.
他们砍倒了大片杜鹃花丛给新奇的外来植物腾地方。
How to design new exotics and give them reasonable price is becoming some scholars 'task.
如何设计出符合实际需要的新型期权并对其进行定价成为了许多学者研究的课题。
How to design new exotics and give them reasonable price is becoming some scholars 'task.
如何设计出符合实际需要的新型期权并对其进行定价成为了许多学者研究的课题。
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