士兵一接到命令就打了背包.用英语怎么说？

士兵一接到命令就打了背包.

The moment he received the order, the soldier packed his knapsack.

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。

moment

n. 瞬间，片刻，时刻，重要，紧要，[物]力矩；

例句
For a moment a shadow seemed to pass across Roy's face.
一瞬间罗伊脸上似乎闪过一丝忧伤。

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。

received

adj. 被一般承认的，被认为标准的；v. 收到( receive的过去式和过去分词 )，接到，接纳，接待；

例句
All this equipment has received international acclaim from the specialist hi-fi press.
这套设备受到全球高保真音响专业报刊的赞誉。

order

n. 命令，秩序，规则，制度，次序；vt. 命令，订购，整理；vi. 下订单；

例句
The way that American history is taught may change in order to accommodate some more of those cultures.
美国历史的授课方式可能会为了照顾到更多的文化而作改变。

soldier

n. 士兵，军人，战士；v. 坚持，硬挺着；

例句
A soldier was arrested after running amok with a vehicle through Berlin.
一名士兵在疯狂飙车穿越柏林后被逮捕。

packed

adj. 充满…的，塞满了…的；v. 包装(pack的过去式和过去分词)；

例句
All through yesterday crowds have been arriving and by midnight thousands of people packed the square.
昨天陆续有大批人到来，午夜时有几千人聚集在广场上。

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。

knapsack

n. （士兵或旅行者的）背包；