玛丽卡•霍兰德：一些科学家就此进行了种种推测，他们认为实际上海冰的消融已经达到了不可逆转的程度，或者与之非常接近。
Marika Holland: So there’s been a lot of speculation from some scientists that we could have already passed a tipping point, or be close to a tipping point.
当你评估一个计划、模型、文档或一些其他不可执行的表现物的美好和出色之处时，你只是在推测项目质量和进度。
As long as you are assessing the beauty or goodness of a plan, model, document, or some other nonexecutable representation, you are only speculating about quality and progress.
进行计划和预期绝非坏事，但要避免根据推测做出不可更改的决定。
Plans and predictions are not bad, but making irrevocable decisions based on speculation is to be avoided.
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