词汇	lesson burden
释义	lesson burden 课业负担
随便看	respiratory cavity respiratory center respiratory centers respiratory centre respiratory chain Respiratory Chain Deficiencies,Mitochondrial Respiratory Chain Deficiency respiratory chain function respiratory chain NADH dehydrogenase respiratory chain of succinic acid oxidation respiratory chain phosphorylation Respiratory Chains respiratory chamber respiratory chemoreflex respiratory chromogen Respiratory Circulation Respiratory circulation arrest respiratory climacteric respiratory coefficience respiratory coefficient respiratory column Respiratory communicable diseases respiratory complex Respiratory Complex I respiratory complexⅡ