The structure of the obtained flame retardant was identified by IR, 1HNMR and elementary analysis. In addition, the effects of water-trapping agent and catalyst on the reaction are discussed.

用元素分析、IR、1HNMR验证了化合物的结构，分析了除水剂、 催化剂等反应条件对反应结果的影响。

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It acts as a self-cleaning agent to keep ears healthy by trapping dirt, dust, and other small matter, keeping them from getting farther into the ear.

它发挥着自我清洗剂的作用，通过吸附污垢、灰尘和其它细小物质保持耳朵健康，从而防止它们进一步进入耳内。

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The invention relates to a special killing agent for preventing, removing, trapping, and killing cockroaches, ants, greyish brown ants, brown ants, and formica rusca Linnaeus.

本发明是一种专用于防除、诱杀蟑螂、蚂蚁、黑蚁、褐蚁、红蚁 的一种杀剂。

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While methane is a cleaner source of energy than oil or coal when burnt, on its own it is an unusually powerful heat-trapping agent -- perhaps 20 times more potent than carbon dioxide.

CNN: Japan warms to 'fire ice' potential