The two of them were necking on a park bench.

他们俩在公园的长凳上拥抱亲吻。

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It's not a good idea to be necking in public.

在公共场所亲热不是好主意。

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But the stress-strain relationship is in complex stress condition after the necking starts.

但是，从颈缩开始，其应力应变关系处于复杂应力状态。

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But the stress-strain relationship is in complex stress condition after the necking starts.

但是，从颈缩开始，其应力应变关系处于复杂应力状态。

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