This is the core of FREE, at least as it exists online.

这是“免费”的本质，至少在对网络可以这样说。

youdao

Still, it costs "at least $50 a child a year" to run core operations.

不过，每年的花费还是至少”50美元每个儿童”以使核心组织运作。

youdao

Expert proposal, pillow core at least biennially is changed, bask in every week.

专家建议，枕芯至少每两年换一次，每周都晒一次。

youdao

Expert proposal, pillow core at least biennially is changed, bask in every week.

专家建议，枕芯至少每两年换一次，每周都晒一次。

youdao