1.
primary viviparae
第一寄主的孤雌胎生蚜
2.
Alternate host Any host other than the main (most common)one.
转主寄主：非主要寄主的任何一个寄主。
3.
host specificity of a parasite.
寄生虫寄主专一的特性。
4.
We have consigned the goods, valuing $19,000,000 as the first consignment to you .
我们已将第一次寄信品寄交贵公司，价值19，000，000元。
5.
The animal or plant on which or in which another organism lives.
宿主，寄主有另一种生物寄生其上的动植物
6.
Get this letter off by the first post.
把这一封信交第一班邮递寄出去。
7.
I want to send this package by first class mail.
我想用第一类邮件寄这个包裹。
8.
You'd better send this heavy letter by first class mail.
你最好把这封厚信按第一类邮件邮寄。
9.
I'll send the package first class.
我把这邮包按第一类邮件邮寄。
10.
She purchased a knitted petticoat and sent it to the Thenardiers.
她买一条绒线编织的裙，寄给了德纳第。
11.
Bring the first operand to the date register.
将第一个操作数输入数据寄存器。
12.
I am enclosing a money order to cover the initial deposit that you have asked for.
附寄汇票一张，以支付所需的第一笔保证金。
13.
Animal or plant on which a parasite lives
寄主，宿主（寄生物所寄生的动植物）
14.
When the article arrived, the editor read the first sentence and then refused to publish it .
稿子寄到后,编辑读了第一句就拒绝予以发表。
15.
We'll mail you a check the first thing in the morning.
我们早上要做的第一件事就是给你寄支票。
16.
We are pleased to send you our Proforma Invoice No. ... in triplicate as requested.
"按要求,兹寄上我方形式发票第...号, 一式三份."
17.
The first requirement is to send us your diploma copy.
第一个要求是给我们寄来你的文凭副本。
18.
I'd like to get this letter off by the first post.
我想将这封信在邮局第一次收信时寄出去。