Or is it just a matter of the food chain?
或者说这仅仅是食物链的问题？
She ordered just a salad, but spent the meal chain-smoking.
她只要了沙拉，而把吃饭的时间全花在抽烟上了。
Polymerase chain reaction is really just a process of heating and cooling genetic material.
聚合酶链反应（PCR）确实就是一个给遗传物质加热和冷却的工艺而已。
There is a minimum size for the reactor at which the chain reaction will just work.
为使链式反应刚好能够维持下去，反应堆要有一个最起码的尺寸。（目的状语）
These classifications apply along the whole Supply chain not just within a facility or plant.
这些分类适用于沿整个供应链的不只是一个设施或植物。
The great Chain was protected by a boom just south of it.
这条伟大的河上锁链由一条在它南面的栏木所保护起来。
The great Chain was protected by a boom just south of it.
这条伟大的河上锁链由一条在它南面的栏木所保护起来。
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