The first step to grow rice is preparing the land. It must be level.

种植水稻的第一步是准备好土地。它必须是平坦的。

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A table top must be level.

桌子面一定要平。

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Services must be shaped to fit each country's health care needs and level of technological development.

VOA: special.2009.06.17

If you want to have high level of creativity, it's a must you have to be depressed.

如果你想拥有更高水平的创造力，必须承受抑郁。

哈佛公开课 - 幸福课课程节选

Mister Quinn says efforts to combat the problem must also be increased at the community level.

VOA: special.2010.05.17

And if you want to catch white collar criminals, there must be some level of intrusiveness by investigators, prosecutors and regulators.

FORBES: Is the Current Wave of Insider Trading Cases a Deterrent to Others?

Art must reflect gameplay, which must reflect the theme, that must be reflected on level design.

FORBES: 'Journey' Review: Making Video Games Beautiful

Candidates must be female postdoctoral level researchers who have already been awarded their research doctorate in the fields of life or physical science.

UNESCO: UK National Commission for UNESCO :: UK and Ireland National Fellowships