Mcpo
abbr. 一级军士长（Master Chief Petty Officer）
🗣️ 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻烦你母亲啦？
What alternatives do I have?
我有什么选择？
it has to develop (partly by means of touch) the ability to judge roughly three-dimensonal distances.
儿童必须发展（部分通过触觉）粗略判断三维空间距离的能力。