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老师：唐纳，水的化学公式是什么？
Teacher: Donald, what is the chemical formula for water?
youdao
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我们在学校里得学习化学公式。
We had to learn chemical formulae at school.
youdao
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他问老师如何应用化学公式。
He asked the teacher how to apply the chemical formula.
youdao
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老师：水的化学公式是什么？
Teacher: What the chemical formula for water is the?
youdao
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老师：水的化学公式是什么？
Teacher: What the chemical formula for water is the?
youdao