defense secretary造句

1、The US defense secretary visited China in July of the same year.
同年7月，美国国防部部长访华。

2、the position of Defense Secretary was created in 1947.
国防部长一职设立于1947年。

3、The Defense Secretary gave an upbeat assessment of the war so far.
国防部长对迄今为止的战事进行了乐观的评价。