The client implementation of attachments must first acquire an implementation of the SEI from a Service.

附件的客户端实现首先必须从一个服务中获得SEI的实现。

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Children may, for instance, first acquire some lnowledge of another lan-guage from a nurse or an older relative and only later on acquire a second one which they consider their native language.

比如儿童可能首先从保姆或长辈那儿学另一种语，后来才学会他们认为是自己本族语的语言。

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First you need to acquire a lease. Once you have the lease in hand you are free to grab the lock.

首先，你需要获得一份契约。一旦你获得了这份契约，就可以自由地拿到锁了。

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"What we acquire first is seismic data, and we start acquiring this within about ten seconds of an earthquake.

VOA: special.2011.06.07

Right, the first skill we want you to acquire, is we want you to be able to use the basic tools of computational thinking to write small scale programs.

好，我想让你们掌握的第一个技能就是，希望你们能使用,计算思维的基本工具,来编写小规模的程序。

麻省理工公开课 - 计算机科学及编程导论课程节选

First, acquire some sort of marking device: pen, pencil, charcoal or gouging stick.

FORBES: The How-To-Do Anything Guide

"The supreme pontiff wishes to pray with us and for us, and to acquire first-hand knowledge of the hard conditions of our region, " he added.

BBC: Pope 'to visit Holy Land in May'

The NRTC, Pegasus and DirecTV filed claims and counterclaims against one another, disputing the length of Pegasus' original contract with DirecTV and whether Pegasus had the right of first refusal to acquire comparable rights when it ended.

FORBES: Magazine Article