The team’s defeat is a salutary warning before the World Cup.

这次失利是在比赛之前对整个队的一个有益警示。

To keep their art alive, the slaves turned capoeira into a dance, and the berimbau, which had warned of an approaching master, began to accompany the dance itself.

为了能够使这种舞流传下来，奴隶们将它变成了舞。曾经用来警示主人到来的波凌波琴，被用来给这种舞做伴奏。