has been poisoning
-ha estado envenenando
Presente perfecto progresivo para el sujetohe/shedel verbopoison.

poison

The construction of Europe is at a disadvantage due to a lack of public confidence, which is currently aggravated by the dreadful climate that has been poisoning the European atmosphere over the last few months.
La construcción europea padece una falta de confianza en la opinión pública, hoy alimentada por el execrable clima que envenena la atmósfera europea desde hace unos meses.
I went to my dentist, and he filled my teeth with mercury based amalgam, which has been poisoning me ever since, for dozens of years.
Mi dentista llenó mi boca con amalgama de mercurio, que me ha envenenado desde entonces, durante docenas de años.
The revelation that the President of France, François Hollande looked in secret with his mistress, the actress Julie Gayet, cheating on his wife, Valérie Trierweiler, has been poisoning increasingly.
La revelación de que el presidente de Francia, François Hollande se veía en secreto con su amante, la actriz Julie Gayet, engañando a su esposa, Valérie Trierweiler, se ha ido envenenando cada vez más.
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