Now when you look at this you see these people handling the uranium pellets. Now uranium 235 in this form is very low in activity because uranium235 has a very long half-life.
现在，当你们观察这个，你们能看到这些人,铀正在处理铀芯块，现在,在这个形式里，是活跃度是很低的，因为铀5,的半衰期很长。
Tourism, as an activity of human social life, has long history.
旅游作为人类社会生活的一项活动，有着悠久的历史。
Tourism, as an activity of human social life, has long history, currently, tourism has become a world-acknowledged rising industry.
旅游作为人类社会生活的一项活动，有着悠久的历史。当前，旅游业已经成为世界公认的新兴朝阳产业。
At length, worn out by his long life of activity, he fell sick after a meal of dried boar's flesh, and died in the eightieth year of his age.
在长度，精疲力尽的他长期生活的活动，他病倒后，一餐干野猪的肉，并死在八十岁的他的年龄。
The acid-resistant anode has such advantages as high acid resistance, long service life, high catalytic activity and wide applications.
本发明的耐酸阳极寿命长，催化活性高，是一种具有广阔应用前景的耐酸阳极。
The catalyst has high activity, high selectivity, high stability, long service life and high catalytic efficiency.
本发明使得催化剂的活性和选择性高、稳定性好、使用寿命长、催化效率大大提高。
The series has a long life, high activity efficiency, low operating costs, without any dynamic parts.
该系列产品具有使用寿命长，活性效率高，运行成本低，无需任何动力部件。
The series has a long life, high activity efficiency, low operating costs, without any dynamic parts.
该系列产品具有使用寿命长，活性效率高，运行成本低，无需任何动力部件。
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