。
She carried this table by herself.
Literal
She [topic-は] alone this table [object-を] carried.
ひとりで here suggests 'unaided,' carrying weight alone — a slightly impressive feat. 運ぶ ('to carry, transport') covers everything from a single object across a room to professional cargo movement; the verb is neutral about the means or distance and lets context fill in the picture. テーブル is one of the standard pieces of household-vocabulary loanwords from English; its native counterpart 机 ('desk') is reserved for writing surfaces, while テーブル means a dining or general-purpose table.