他们走私钻石入境时被发现了。用英语怎么说？

他们走私钻石入境时被发现了。

They were caught smuggling diamonds into the country.

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

caught

v. 赶上( catch的过去式和过去分词 )，接住，引起，看见；

例句
The men were caught in the act of digging up buried explosives.
那些人在挖掘掩埋的爆炸物时被逮个正着。

smuggling

n. 走私，偷运；v. 偷运( smuggle的现在分词 )，私运，走私，不按规章地偷带（人或物）；

例句
Williams operated the smuggling scheme in league with his brother.
威廉斯串通其弟进行走私活动。

diamonds

n. <数>菱形( diamond的名词复数 )，方块牌，金刚钻，[常用复数]（项链、戒指等）钻石饰物；

例句
They were dazed by window displays dripping with diamonds and furs...
他们被满橱窗陈列的钻石和皮草弄得眼花缭乱。

into

prep. （表示方向）进入…中，（表示所属）输入，（表示状态）进入…状态，（表示时间）持续到；

例句
By 1838, the abolitionists had shamed parliament into ending slavery in British colonies...
到1838年，废奴主义者迫使议会出于道德压力而废除了英国殖民地的奴隶制。

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。

country

n. 国家，国民，乡下，地区；

例句
The country was on the brink of an abyss.
国家岌岌可危。