more than idiom
非常，极其
very
It's more than likely that there's oil here under the ground. 这里的地下很可能有石油。
I was more than a little (= I was very) curious about the whole business. 我对整件事都非常好奇。
formal We will be more than glad/happy/willing to help you in any way we can. 我们会很高兴／乐意／愿意尽我们所能来帮助你。