If a woman living with her husband makes a vow or obligates herself by a pledge under oath.

她若在丈夫家里许了愿或起了誓，约束自己。

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So she made a vow Lying under that tree. That she'd wait for her true love To come set her free. Always waiting for someone To ask for her hand.

所以她躺在树下立誓。等待真爱来给她自由。一直等着愿意牵起她手的人。

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You might argue, "That was a promise made under duress. Besides, no one was there to hear the vow, so it didn't really count, right?"

你可能替自己辩护说：“我当初作这个承诺是为势所迫，何况当时没有人听见我起誓，所以，不能当真吧？”

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They insist that their results are reproducible, and that corporate clients who have tested their materials (under a vow of silence) have been satisfied.

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Despite North Korean threats that have followed new U.N. sanctions over Pyongyang's recent nuclear test, Park has pressed forward with a vow to create trust and renew dialogue after five years of tension and animosity under her hard-line predecessor.

NPR: South Korean Prez Stumbles In First Month On Job