（八）放射源，是指除研究堆和动力堆核燃料循环范畴的材料以外，永久密封在容器中或者有严密包层的放射性材料。
“中国一強”「レアアース」 日本の戦略に密着取材
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В Финляндии предупредили об опасном шаге ЕС против России09:28
And, if a robot arm were to swing out towards you, for safety reasons you would want to be able to immediately stop it and push it back without harming yourself, reverse that motion instantly. For one thing, that requires a back-driveable actuator.
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Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36