But some firms deliberately stay small in order not to pass thresholds that would trigger tougher rules.

但是一些企业仍然保持小型规模，避免踏过会触及更多监管规则的门槛。

In 2024 the US Fish and Wildlife Service will formally decide whether monarchs are threatened or endangered, which could trigger conservation rules.

2024年，美国鱼类和野生动物管理局将正式决定黑脉金斑蝶是否受到威胁或濒危，这可能会触发保护规则。