tenacity n.坚韧;坚毅； 例句 They competed with skill and tenacity. 他们竞争靠的是技术和顽强意志。 Talent, hard work and sheer tenacity are all cr...
come across偶然遇见，碰到； come out开花，出版，出来； come up走进，被提及； come up with提出； come about发生； come to oneself苏醒；恢复知觉 How...
tough adj.坚强的，不屈不挠的；坚韧的，牢固的； 例句 It was a tough decision to make. 那是个很难作的决定。 She had a pretty tough childhood. 她度...
