Four enzyme activities 四种酶活性
"There is no way we can monitor the activities of each juror twenty-four hours a day.
VOA: special.2009.08.31
"For now it's like a honeymoon." "People come and see their products and IOM facilitated them to go to an expo in Jakarta and they made like 10 million rupiah in four days but they also need to understand how they can allocate that for their own promotion activities."
VOA: standard.2010.04.14
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