Relying on mechanisms that scientists would love to understand, black bears spend five to seven months without eating, drinking or taking a single bathroom break.
依靠着科学家们希望能够理解的机理，黑熊可以在五至七个月中不吃不喝，甚至不排泄废物。
Those conclusions are significant to the study and design of five bar mechanisms.
对五杆机构的设计和分析具有指导意义。
Currently, there are five types of security mechanisms in the Asia Pacific: First, the US-led alliance system and relevant bilateral and multilateral arrangements;
目前亚太主要有五类安全机制：一是美国主导的同盟体系及其双多边安排。
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