I have a science class this afternoon.
今天下午我要上科学课。
Does Li Li have a science class on Thursday?
李丽星期四上科学课吗？
A paper from Science of the Total Environment shows that the largest freshwater fish in China might have gone extinct between 2005 and 2010. Wei Qiwei, author of the paper, said in September, 2019, some experts supposed that the first-class protected fish had been extinct already.
《整体环境科学》的一篇论文显示，中国最大的淡水鱼可能已经在2005年至2010年间灭绝了。2019年9月，该论文的作者危起伟表示，一些专家认为这种一级保护鱼类已经灭绝。
So, we`re very pleased today to have Brian here He is also a Princeton alumnus, Class 1999, Computer Science Department, part of school of engineering here.
我们非常高兴今天Brain能来到这里,他也是普林斯顿校友，毕业于1999年计算机科学系，属于工学院的一部分。
I have competence and skill to effectively teach the topic of greenhouse effect and global warming in a school science class.
我有能力和技巧，以有效的方式在学校的科学课教温室效应和全球变暖。
Young Americans have generally woken up to the bad prospects and absence of a reasonable middle class career path in science and are deserting it. If you haven't yet, then join them.
美国年轻的一代已经觉醒，看到了科学界黯淡的发展前景以及无法拥有一个合理的中产阶级生活，因此他们已经不愿意做科学家。
Young Americans have generally woken up to the bad prospects and absence of a reasonable middle class career path in science and are deserting it.
年轻的美国人，已经对糟糕的预期和科学缺失的合理的中产阶级职业路径清醒，并开始追寻。
Young Americans have generally woken up to the bad prospects and absence of a reasonable middle class career path in science and are deserting it.
年轻的美国人，已经对糟糕的预期和科学缺失的合理的中产阶级职业路径清醒，并开始追寻。
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