After this safety evaluation, safety classes for each slope project need to be categorized.

经过此次安全评估工作后，应对评估为不同安全等级的防护工程分类采取相应措施。

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Regulations such as minimum operating age, restricted operating areas and compulsory classes in water safety are essential.

诸如最低操作年龄、限制操作区域和水上安全必修课等规定是必不可少的。

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Safety concerns have driven the middle classes into gated compounds and tourists into all-inclusive resorts.

考虑到安全问题，中产阶级都搬到封闭的建筑物里，旅客们住在囊括一切的旅游胜地。

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"We went to the hazmat safety classes, and you have one guy telling you you don't want to be in it.

VOA: standard.2010.05.06

Sometimes they're reluctant to take part in important training such as fire safety classes and child identification programs, which guard against abduction.

VOA: standard.2010.07.22

Responsible buyers would pay lower premiums for taking gun-safety classes, using gun locks and safes.

FORBES: Gun Insurance: An Economic Argument

Proposals put forward by the Devizes MP include age ratings for sexually provocative music videos, restrictions on access to so-called "lads' mags", labelling on airbrushed photos in magazines and internet safety classes in schools.

BBC: British children 'babied' by intrusive parents, says MP

Asset classes that promise safety (e.g. gold) may actually prove to be more volatile rather than less.

FORBES: As Markets Plummet, Advice For The Financial Advisor