。
The train is very late today.
Literal
Train [topic-は] today [topic-は] significantly is-late.
Double は: 列車は (main topic) and 今日は (temporal contrastive topic, 'today in particular'). The second は subtly implies 'today as opposed to other days.' 十分 here is 'significantly, considerably' — the adverbial reading, ambiguous on paper but pinned down by context.