在经过对各种不确定性因素评估后，发现没有一个双星系统中存在2 - 5个太阳质量的黑洞。
None of them had a black hole of 2-5 solar masses living there, even after observational uncertainties were considered.
她说，当存在不确定性时，印度科学家在做出推论方面犹豫不决，相反却愿意保持四平八稳，在措施和评估上出言谨慎。
The country's scientists hesitate to draw inferences when there is uncertainty, she says, instead preferring to play it safe and be cautious in their words and assessments.
预计最切题的长期研究将在两至三年后得出结果，而且这些研究可能有助于减少目前危险性评估中的不确定性。
Results from the most relevant long-term studies are expected to be available in two to three years time and these studies may help in reducing the uncertainty in the current risk assessment.
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