He thought Aster sometimes crowded the line between courage and rashness.是什么意思？

He thought Aster sometimes crowded the line between courage and rashness.

他认为埃斯特有时候混淆了勇敢与鲁莽之间的界限.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

thought

n. 思想，想法，关心，思索；v. 想（ think的过去式和过去分词），思索，以为，认为；

例句
This was clearly a failure by someone who thought he was above failure...
这显然是认为自己根本不会失败的人所遭遇的一次失败。

aster

n. 紫菀属植物，天体，碎件，星体；

例句
The word had harsh force because Aster tended to avoid obscenities.
这个词非常刺耳,因为埃斯特总是避免说脏话的.

sometimes

adv. 有时，间或，时

例句
I want to work at home on a Tuesday but as it turns out sometimes it's a Wednesday or a Thursday.
我想周二在家工作，但实际上有时却是周三或是周四。

crowded

adj. 水泄不通的，拥挤的，肩摩踵接；

例句
The market-place and street were crowded with those who'd come to barter...
市场和街道上挤满了前来做物物交换的人。

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。

line

n. 线条，排，行列，界线；vt. 排队，用线标出，沿…排列成行，给…安衬

例句
Every time I fluffed a line Lenny got me out of trouble with a brilliant ad-lib.
每次我台词出错时，伦尼都通过机智的临场发挥帮我解围。

between

prep. 在…之间，私下，暗中，在…中任择其一，来往于…之间；adv. 当中，中间；

例句
How big is the abyss between what you think you are and what you actually are?
你对自己的认识和真实的你之间差别到底有多大？

courage

n. 勇气，胆量，魄力，肝胆；

例句
He showed courage in adversity.
他在逆境中表现出了勇气。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

rashness

--

例句
With characteristic rashness and valor, Peter plunged into the icy water.
以他惯有的冲动和勇气，彼得一头扎进了冰冷的水中。