植物是各类动物的食源，外来者蔓延的威胁抑制它们生长，生态系统食物链的稳定性日渐堪忧。

The spread threatens to smother vegetation that is a source of food for a variety of animals, raising concerns about the stability of the ecosystem's food chain.

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基本的单链多肽，通过与酶的活性位点紧密结合形成复合物，抑制大多数的丝氨酸蛋白酶。

Basic single-chain polypeptide that inhibits numerous serine proteases by binding to the active site of the enzyme, forming tight complexes.

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当PVC初期受热分解时，分子链上的初期稳定官能团起作用，抑制其分解。

These stabilizers could inhibit the thermal decomposition at the early stage, and meanwhile prolong the long-term heat stability of PVC.

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