他做自由职业每年可赚2万元。

His freelance work brings him in about $20 000 a year.

《牛津词典》

75美元一磅的铜价在财务报表上反映为Freeport每股十元的自由现金流。

On $3.75 a pound copper my worksheets show Freeport's free cash flow running at $10 a share.

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GABA含量高时，神经元无法形成新的连结，同时大脑的学习能力也会降低；而含量低时，神经细胞可自由形成新的连结。

High levels of GABA can prevent neurons forming new connections - and slow down the brain's ability to learn - while low levels free nerve cells to create new brain circuitry.

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