Masur led the orchestra with assurance.是什么意思？

Masur led the orchestra with assurance.

马苏尔神定气若地指挥乐团。

Masur

LED

v. 带路( lead的过去式和过去分词 )，领导，指挥，领先；

例句
The advent of war led to a greater austerity.
战争的到来使形势更为严峻。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

orchestra

n. 管弦乐队，管弦乐队的全部乐器；

例句
Masur led the orchestra with assurance...
马苏尔神定气若地指挥乐团。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

assurance

n. 保证，担保，（人寿）保险，确信，厚脸皮，无耻；

例句
They had given an absolute assurance that it would be kept secret.
他们信誓旦旦地保证将对此绝对保密。