try out

try out
试验
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。
He got to try out all the new software.
他得以试用了所有的新软件。
You had better try out the machine before buying it.
你在买这机器前最好先试用一下。
Be sure to try out the computer before you buy it.
购买电脑之前一定要试用一下。
We'd like to try out the product before we buy it.
购买之前我们想先试用一下这个产品。

详解：

try on和try out这是一对try+副词组成的词组。
try on:指“试穿（衣服、鞋子）”及“试戴（帽子）”等，其中的on为副词，当宾语是代词时，该宾语要放在on之前；如果宾语是名词，该宾语放在on之前或之后均可。
试穿衣服
try on a coat＝try a coat on
这新帽子是给你的，请试试看。
The new hat is for you．Please try it on.
try out: t指“试验或试用”某种机器、理论或方法，其中的out为副词，当宾语是代词时，try out要分开用。
去年我们大面积试种这种新庄稼。
We tried out this new crop on a large area last year.
我来试试看能否行得通。
I'll try it out and see if it works.

try on<-->turn down