He quickly donned a welcoming smile as his guests arrived.是什么意思？

He quickly donned a welcoming smile as his guests arrived.

客人一到, 他立刻笑脸相迎。

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。

quickly

adv. 迅速地，立即，马上；

例句
Reaching this agreement so quickly was a great achievement...
如此快速达成这项协定是一大伟绩。

donned

--

例句
Seconds later Neill donned her clothes and Hyman handed the film to an aide.
几秒钟后,尼尔穿上衣服,海曼将影片交给副手.

welcoming

v. 欢迎( welcome的现在分词 )，迎接，乐于接受，希望有；

例句
They were a clannish lot, not given to welcoming strangers.
他们那帮人抱成一团，不怎么欢迎生人。

smile

n. 微笑，笑容；vt. 以微笑表示，以微笑完成；vi. 微笑，赞许，不在乎；

例句
He answered her smile with one of his own...
他对她的微笑回以同礼。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

guests

n. 客人，来宾，旅客 vt.招待，款待 vi.作客，客人( guest的名词复数 )，旅客，特邀嘉宾，[动物学]客虫；

例句
...a hotel built to accommodate guests for the wedding of King Alfonso...
一家为接待前来参加阿方索国王婚礼的来宾而建的宾馆

arrived

v. 到达，来( arrive的过去式和过去分词 )，发生；

例句
...a bundle of letters which had arrived for me in my absence...
我不在期间寄给我的一大堆信件