（三）在铁路、城市轨道交通线路、桥梁、隧道、涵洞处挖掘坑穴、采石取沙的；
The tests used in standards for evaluating smoke alarms were developed back in the 1980s. However, despite changes in building materials since then, smoke alarms remain reliable, says Chagger: "They still respond to all the main fires we get today."
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Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
some of IBM's signature design concepts. I mean that more literally than you