他们推测入侵性强的物种拥有本土植物所不具备的化学武器，因此，本土的害虫、寄生虫和其它植物群对此化学武器都没有任何还击之力。

Their hypothesis was that highly invasive species would have chemical weapons not found in native plants and which pests parasites and other plants would therefore not have evolved any resistance to.

youdao

已知的AR-V7变异体也在一组筛选后患者群中高表达，这群患者从未经历内分泌治疗，但其肿瘤在手术切除后复发性强。

One variation - known as AR-V7, was also prevalent in a select group of patients who had never taken hormone therapy, but whose cancer aggressively regrew after surgery to remove their tumors.

youdao

当一群人一起攀岩的时候，总有比你强的，也有比你弱的。

When you climb in a group, there will be climbers that are better than you and climbers who are weaker than you.

youdao