It must be better to attempt a duty, though we fail, than never to attempt it at all.

尽忠职守而失败总较不为者而佳。

We attempted to break through the lines of the enemy.

我们试图突破敌人的阵线。

The weather was sufficiently good to justify an attempt.

天气良好，足以一试。

An attempt was made on his life.

曾有人想要杀害他。

an attempt at murder

杀人未遂。