"pioneer" ←「開拓者」の直訳です。例えば、"Steve Jobs was a pioneer in the smartphone industry."か"Craig Venter is a pioneer in the field of genomics."と言えます。
"innovator"・"leader" ←「開拓者」の意訳です。"innovator"は「イノベーター」で、"leader"は「指導者」のことですが、"innovator"と"leader"はよく「開拓者」の意味合いでが使われています。例えば、"Steve Jobs was a leader of the smartphone industry."か"Craig Venter is an innovator in the field of genomics."と言えます。
「自分も特定の分野での開拓者になりたいと考えています。」の例文:
・"I am thinking I also want to become a pioneer in a specific field."
・"I am thinking I also want to become an innovator in a specific field."
・"I am thinking I also want to become a leader in a specific field."