一只年轻的海豹在南非干斯拜附近的巨藻丛中觅食.A young fur seal forages amid bull kelp near Gansbaai, South Africa.巨藻的微小部分显示出这种海洋植物非同寻常的特征.A tiny section of kelp exemplifies the extraordinary features of this sea plant....
Jay had always tended to keep his girlfriends at a distance.杰伊一贯和他的女朋友们保持距离。I thought at first that Jay had been stirring things up.我起初认为杰伊一直在挑起事端。Jay wanted to write.杰伊想要写作。...
Activity andstability of immobilized glucoamylase and penicillin acylase were studied.本文着重论述了两大类固定化酶载体的合成及其分别用于固定糖化型淀粉酶和青霉素酰化酶的研究.The optimum conditions that α - amylase and glucoamylase hydrolyzed chestnut starch were f...