Mark Mallory, along with two other scientists from the Canadian Wildlife Service, recently completed a survey that used fieldwork data spanning the last 33 years.

Mark Mallory 与来自加拿大野生动物保护署的其他两位科学家最近完成了一个调查，这个调查所使用的野外数据跨度达到33年。

youdao

And we also have here your outstanding Mayor -- Mark Mallory is in the house. (Applause.) And it is great to see all of you.

WHITEHOUSE: The White House

Mayor Mark Mallory is here.

WHITEHOUSE: President Obama Speaks at the African American Policy in Action Leadership Conference | The White House