Example sentences of "are [not/n't] [vb pp] at the [noun] " in BNC.

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1 Moreover , in these models , if the firms have different and non-constant marginal costs , a further source of inefficiency is that total market output will be produced at more than minimum total cost — the marginal costs of firms are not equalized at the equilibrium .
2 Although the two systems are not integrated at the moment , they will be eventually .
3 The ever increasing volume of legislation must inevitably result in ambiguities of statutory language which are not perceived at the time the legislation is enacted .
4 But it is imperative that savings are not made at the expense of those the legal aid system exists to serve .
5 ‘ We are not joined at the hip , ’ Cabochon said , and smiled bitterly .
6 Actual flight numbers are not known at the time of going to press .
7 We see each other every now and again , but we are n't joined at the hip like Siamese twins , you know . ’
8 If the witnesses are n't killed at the time , then they are often murdered at a later date , or frightened off with violent threats .
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