Breathe out and ease your knees in toward your chest.呼气，膝部放松向胸部靠拢。Place your hands on the small of your back and breathe in.双手置于腰部，吸气。Hold your breath for a count of five, then slowly breathe out.屏住气息数五下，然后慢慢地呼气。...
May I decant it now to allow it to breathe?我可否慢慢倒,好让香味散发出来?Always breathe through your nose...要一直用鼻子呼吸。Hold your breath for a count of five, then slowly breathe out.屏住气息数五下，然后慢慢地呼气。He has gone; you can breathe again.他已经走...
较轻的推进器采用液态氢, 较重的采用自燃推进剂.The lighter version used liquid hydrogen, the heavier used hypergolic propellants.磷化氢是一种有毒气体,在空气中可以自燃.Phosphine is a toxic gas which ignites spontaneously in air.它们也可作为自燃点火成分,改进点火和重新点火性能.They also...
Euphorbia kansui L. ( Euphorbiaceae ) is abundantly distributed in the northwesten China.生药甘遂为大戟科[euphorbiacea]植物甘遂[ Euphorbia kansuiL. ]的干燥块根.Objective To study the phenylpropanoid constituents from the roots Euphorbia ...