i know that there is pain
我知道有痛苦
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Because I just know that there is no perfection also not in happiness and the pursuit of it involved risks, pain, rejections, sweet and tears.
因为我知道世间无完美，幸福也是如此，追求它就会伴随着风险、疼痛、拒绝、温馨和眼泪。
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