sth擅自拿走或偷窃某物的英文

sth take sth without the owner's permission steal

• 擅自:    do sth. without au ...
• 拿:    hold; take
• 走:    walk; go
• 或:    nǎi-.
• 偷窃:    steal; pilfer; pil ...
• 某物:    somewhat