他们很认真
They are serious.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
我相信他们很认真在考虑要结婚。
I believe they're seriously thinking about getting married.
youdao
是啊！我相信他们很认真在考虑要结婚。
Yes.I believe they're seriously thinking about getting married.
Yes. I believe they're seriously thinking about getting married.
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