He and his mates were out picking mangoes.是什么意思？

He and his mates were out picking mangoes.

他和他的同伴出去摘芒果了.

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。

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。

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。

mates

n. [英]伙伴( mate的名词复数 )，同伴，（非正式）配偶，（熟练工人的）助手；

例句
The males guard their mates zealously.
雄性动物死死地守护着他们的配偶。

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。

out

adv. 出局，在外，在外部，完全，彻底，出版；prep. （表示来源）从，（从…里）出来，（表示不在原状态）脱离，离去；vt. 使熄灭，揭露，驱逐；adj. 外面的，出局的，下台的，外围的；n. 不流行，出局；

例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

picking

v. 采摘，采( pick的现在分词 )，摘，啄，

例句
Molly had cringed when Ann started picking up the guitar...
安开始弹吉他时，莫莉感到有些难堪。

mangoes

n. 芒果（mango的复数形式）；

例句
300 tons of Peruvian mangoes were kept from entering France.
300吨秘鲁芒果被禁止进入法国。