use at meaning in English
（使用位置）：当视口回放或者渲染时存储粒子运动到缓存中。默认为视口。
（使用在）：当视口回放或者渲染时存储粒子运动。默认为视口。
Examples
- He was of no use at all in the business .
他在业务上一点用场也没有。 - We can use at most nine words in this code .
在这个电码系统中我们最多可用9个字。 - Two-stage chromate reduction has been used at several plants .
一些厂已采用两段铬酸盐还原法。 - These are used at a later stage for investment in under-developed areas of countries .
这些将在以后用于对某些国家落后地区的投资。 - 1 hz horizontal and 4hz vertical transducers are used at many stations as supplements .
1赫兹的水平向变换器和4赫兹的垂直向变换器也当作附件用于许多台站。