The U.S. Geological Survey says nine species of pythons, atype of snake that can range from 12 to 28 feet in length, pose amedium- to high-risk threat to ecosystem health.

美国地质调查局称，九种蟒蛇——长度从12英尺至28英尺不等的蛇，对生态系统的健康形成中度至高度风险的威胁。

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Those constructs include type constraints, length constraints, control types (drop-down list, text input, range), and iterative structures.

那些构造包括类型约束、长度约束、控制类型（下拉列表、文本输入、范围）和迭代结构。

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Conversion and validation allow you to focus on business logic rather than the tedious qualifications of input data such as null checks, length qualifiers, range boundaries, etc.

转换和验证使您可以侧重于业务逻辑，而不是侧重于对输入数据进行繁琐的资格认定，比如null检验、长度限定、范围边界，等等。

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The migratory patterns of the birds involved range the length of the state of Florida, as well as into parts of Georgia.

CNN: Chemicals killing Florida birds, fish

And three to six months of assistance to unemployed home-owners is not a program with long-range chances of success, given the length of time that workers are remaining unemployed, unable to find new jobs after being unemployed for a year or two.

FORBES: Feeble New Housing Rescue Plan Not Enough

"We considered over 30 designs and believe that the QSST is the only design that meets all the desired requirements including range, take-off and landing field length, take-off noise, emissions and sufficiently low sonic boom characteristics to enable supersonic flight over land, " he told CNN.

CNN: Bang goes the sonic boom