He glanced a trifle apprehensively towards the crowded ballroom.是什么意思？

He glanced a trifle apprehensively towards the crowded ballroom.

他敏捷地朝挤满了人的舞厅瞟了一眼.

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。

glanced

v. 一瞥( glance的过去式和过去分词 )，略视，闪耀，浏览；

例句
He glanced across at his sleeping wife...
他朝熟睡的妻子看了一眼。

trifle

n. 琐事，少量，蛋糕；vi. 轻视，藐视，嘲弄，随意摆弄，玩弄；vt. 浪费（时间或金钱），虚度；

例句
It can be a dangerous course of action which might be sound in theory but — ahem — perhaps a trifle risky in practice...
这可能是一次危险的行动，在理论上听着无缝可击，但——呃哼——真做起来却可能有点冒险。

apprehensively

adv. 担心地；

例句
I waited apprehensively for him to comment.
我战战兢兢地等着他给出评论。

towards

prep. 朝，向，对于，接近，为了；

例句
...absent fathers who fail to pay towards the costs of looking after their children.
那些不在子女身边、未能支付抚养费的父亲

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。

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。

ballroom

n. 舞厅，跳舞场；

例句
They milled around the ballroom with video cameras.
他们扛着摄像机在舞厅里转来转去。