P 开头单词

persian greyhound

persian cat 波斯猫（一种长毛型家猫）

perseveringly 坚定地

persevering adj.坚忍的，固执的v.坚忍，坚持( persevere的现在分词 )

perseveres v.坚持；不屈不挠

perseverence n.坚定不移

persevered v.坚持；不屈不挠

persevere with 坚持

persevere in an effort 努力不懈

persevere in 坚持

persevere at 坚持

persevere vi. 坚持；不屈不挠；固执己见（在辩论中）

perseveration theory [心理学]持续论

perseveration of speech [医药科学]持续言语

perseveration (n.)

perseveration n. 持续言语（指言语反复不止的病态）；持续重复的行为；执拗

perseverate (v.)

perseverate vi. 患持续言语症；表现固执