甲烷起火，致使8人丧生。The ignition of methane gas killed eight men.甲烷和丙烷是烷烃。Methane and propane are alkanes.甲烷常被认为是仅次于二氧化碳的重要温室气体。Methane is often regarded as the second most important greenhouse gas after carbon dioxide....
To look for a needle in a haystack.草垛里找针(大海捞针).Some sparks from a passing train set the haystack on fire.一列过往火车迸发出的一些火花点着了干草堆.The escaped prisoners lay doggo in a haystack until the searchers had gone away.越狱的囚犯们一直躲在干草堆里...
An axial vector may itself enter into a vector product.轴矢量自身可参与矢积.Those that are aligned perpendicular to the plane are called axial hydrogens.与平面垂直定向的氢叫做直立氢.Objective To analyze the treatment effect of brain diffusive a...