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- Comparative studies show that the immobilized urease on PVA gel has a higher activity yield (79%). 结果表明，PVA凝胶固定化脲酶具有较高的活力收率（79%25）。
- At low concentrations of alcohols such as 20% glycerol, 30% glycol and 10% methanol, the denatured lysozyme could be refolded with high activity yields. 只有较低浓度的多元醇和甲醇有辅助变性溶菌酶复性的作用，其中10%25甲醇、20%25甘油和30%25乙二醇有利于促进酶的复性。
- The office has been humming with activity. 办公室一直忙着搞活动。
- The threat of war has depressed business activity. 战争的威胁使经济萧条。
- There has been a lot of activity in the town today. 今天市中心相当热闹。
- The town was humming with activity. 该市镇生气勃勃，呈现一片热闹的景象。
- Stamp collecting is my favorite activity. 集邮是我最喜爱的消遣。
- The store was a scene of great activity. 这家商店顾客盈门。
- He once engaged in anti-government activity. 他一度从事反政府的活动。
- The office is humming with activity. 办公室里一片忙碌。
- A center of interest or activity. 中心兴趣或活动的中心
- Showing no optical activity in polarized light. 无旋光的极化光下无光学反应的
- An increase, as in movement or business activity. 进步，改进，改善运动或商业活动的进步或兴隆
- Indulgence in or pursuit of sexual activity. 纵欲; 追求肉欲对性行为的放纵或追求
- The phenomena associated with volcanic activity. 火山现象与火山活动有关的现象
- Activity, such as schoolwork or office work, meant to take up time but not necessarily yield productive results. 无生产性工作，机关工作占用时间但不必要获得生产结果的活动，如学校工作或机关工作
- A range of endeavor or activity; a province. 范围努力做 ... 的范围或活动范围; 范围
- Strict regulations that paralyze economic activity. 阻碍经济活动的严格的规章制度
- A state of nervous activity; a fuss. 吵闹处于紧张活动状态; 吵闹
- Purposeful or industrious activity; enterprise. 企图，进取心有目的的、勤勉刻苦的行动; 进取心
