to try out sth or to try sth out
1.+ product试验；测试
It's best to try the dye out first on a bit of spare fabric.最好先在多余的小块布料上试一下这种染料。
2.+ system, machine试运行
London Transport hopes to try out the system in September.伦敦运输局希望在9月份对该系统进行试运营。
She knew I wanted to try the boat out at the weekend.她知道我周末想开船出去试一下。