행운을 빌다 = keep one's fingers crossed

▶ "행운을 빌어."라는 말과 함께 검지와 중지를 꼬아 십자가를 만드는 제스처를 할 때 keep one's fingers croseed라고 해요. 다른 표현으로 Good luck!이라고도 해요. - I hope you will pass your exam. I'll keep my fingers crossed for you. 시험에 통과하길 바라며, 행운을 빌어. ★ Story에서 Jenny는 Claire에게 I won't let you down. 즉 '(이렇게 도와준) 널 실망시키지 않을게.'라고 합니다.

▶ 2. Having a Mock Interview Claire: Okay, as you know, the more you practice, the better you will be able to respond during your actual interview. Jenny: Yes, you’re right. And I believe it will help me to reduce stress as well. Claire: Right. Let’s do it. The questions might be like…. could you please describe yourself, Jenny? Jenny: Oh, er, well…. Claire: Sell yourself! You should sell yourself clearly and effectively. Jenny: Oh, yes, I am confident, energetic, motivated... and I am focused. Claire: Good, go on. Jenny: Uh, well… and.. ah, keeping time is important to me. I always try to complete my work on time. Clair: That’s good. They will be attracted to your energy and self-assurance, I think. And the HR team is going to discuss the salary with you. Sometimes they will try to negotiate your salary. Jenny: Er, well, I am very flexible when it comes to salary. Oh, Claire, I promise I won't cry if I don't pass this time. I am so tired of being unemployed. Claire: Oh, my dear Jenny, you won’t fail again! Just focus on what you can bring to the company. Jenny: Oh, yeah, that’s what I mean. Claire: I wish you the best. I’ll keep my fingers crossed for you. Jenny: Thank you, Claire. I won’t let you down.