The project does not yet have a fixed timescale, although it was unlikely to produce anything physical for "at least five years".
虽然这个项目在至少五年之内不可能生产出任何物质性的东西，但它它目前还没有固定的时标。
One drawback of the questionnaire was that its data tends not to reveal anything unexpected, because it is limited to the questions fixed in advance by the researcher.
问卷调查的一个弊端是收集到的数据往往不能反映任何意料之外的情况，因为它受限于研究者事先所设定的问题。
An object is anything that has a fixed shape or form, that you can see or touch, and that is not alive.
物体是指任何有固定形态的事物，可以看到或者触摸的事物，或者无生命的事物。
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