英语翻译On any collecting trip,obtaining the animals is,as a rul

英语翻译
On any collecting trip,obtaining the animals is,as a rule,the simplest part
of the job.As soon as the local people discover that you are willing to buy
live wild creatures,the stuff comes pouring in; ninety percent is,of course,
the more common types,but they do bring an occasional rarity.If you want the
really rare stuff,you generally have to go out and find it yourself.
The
chief difficulty you have when you have got a newly caught animal is not so much
the shock it might be suffering,but the fact that being caught forces it to
exist close to a creature it regards as an enemy of the worst possible sort:
yourself.On many occasions an animal may take beautifully to being in a cage
but getting used to the idea of living with people is another matter.This
is the difficulty you can only deal with by patience and kindness.
For month
after month an animal may try to bite you every time you approach its cage,
until you despair of ever making a favorable impression on it.Then,one day,
sometimes without any preliminary warning,it will trot forward and take food
from your hand,or allow you to tickle it behind the ears.At such moments you
feel that all the waiting in the world was worthwhile.
这段文字中
As soon as the local people discover that you are willing to buy live wild creatures,the stuff comes pouring in; ninety percent is,of course,the more common types,but they do bring an occasional rarity.
我主要是but后面的不懂

As soon as the local people discover that you are willing to buy live wild creatures,the stuff comes pouring in; ninety percent is,of course,the more common types,but they do bring an occasional rarity.中文：
一旦当地人得知你有意愿购买活的野生动物,这些东西就会涌过来；当然,其中90%是比较普通的类型,但偶尔他们也会带来稀有的品种.