dilutionIELTS重点词汇

'Aromatherapy oils' are not pure essential oils but dilutions.

“香薰精油”并非纯精油，而是稀释液。 。

The synthetic alcohol was mixed in graded dilutions.

合成酒精被掺到分级稀释液中。

readings significantly lower owing to the dilution of the sample.

由于样品稀释而大幅降低的读数。