参加各类机器博览会、展销会以及各地试样机，做的是售前工作的翻译：Participate in various expositions, fairs, as well as around the test prototype of the machine, doing pre work 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Participate in various machine fairs, exhibitions and samples around the machine, do the pre-work

Participate in various expositions, fairs, as well as around the test prototype of the machine, doing pre work

Attends each kind of machine exposition, the exhibition as well as each place tries the prototype, does is the pre-sale work

Participation in various types of machinery Expo 2001, the sample should be around machines, exhibitions, and pre-sales work is done by

Participate in various expositions, fairs, as well as around the test prototype of the machine, doing pre work