1969年，研究者们首次将无营养吮吸次数的增加作为评估标准。

Increases in nonnutritive sucking were first used as an assessment measure by researchers in 1969.

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还有人认为，捕捞棘冠海星的脊椎动物和无脊椎动物捕食者可以降低死亡率、增加成年个体的数量。

Others have suggested that the harvesting of vertebrate and invertebrate predators of Acanthaster could have reduced mortality and caused increased abundance of adults.

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来自交换机的收入(约占总收入的三分之一)虽然无增无减，但订单增加了10%。

Revenue from switches, a third of the total, was flat, but orders increased by 10%.

youdao

I have stocks, bonds, and oil but I want also to add one more final asset, we'll call it the riskless asset, long-term bonds are somewhat uncertain and variable because they're long-term.

有股票，债券和石油,我还想再增加最后一种资产，我们称之为无风险资产，由于长期债券持有期限很长,存在一定不确定性及风险。

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