玛丽决不会让你失望 Mary never let you down
决不会让你
I will never let you
以上为机器翻译结果，长、整句建议使用 人工翻译 。
你尽可以信任他，他决不会让你失望的。
You can believe in him; he'll never let you down.
youdao
你可以信任这位姑娘，她决不会让你失望的。
You can believe in this girl, she'll never let you down.
保持你的刀清洁和尖利，决不会让你作错了。
Keep them as clean and as sharp as your knives, and they will never steer you wrong.
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