Ensuring 這麼用是動名詞 (gerund)。“To” 是 “committed” 常用的介詞。舉個例子：
I am committed to my work.
I am committed to working here.
I am impressed by her. (“By” 是跟 “impressed” 常用的介詞。）
I am committed to work here.（表示有人強迫我在這裡工作。）
@kevinpeng you can a give your name for new a friend
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