在两年的集思广益期间，已经有上百种设想方案被一一尝试又放弃。用英语怎么说？

在两年的集思广益期间，已经有上百种设想方案被一一尝试又放弃。

Hundreds of ideas had been tried and discarded during two years of brainstorming.

hundreds

n. 数百，一百( hundred的名词复数 )；

例句
There are hundreds of people desperate to adopt a child...
有数以百计的人渴望领养孩子。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

ideas

总念；

例句
An important set of ideas have been advanced by the biologist Rupert Sheldrake.
生物学家鲁珀特·谢尔德雷克已提出了一整套重要的观点。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

been

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去分词 ），在，存在，不受干扰，去过了，be的过去分词；

例句
Have you been able to have any kind of contact?...
你联系上了吗？

tried

adj. 可靠地，经过考验的；v. 试图，努力( try的过去式和过去分词)，考验，磨炼，审讯；

例句
He was tried in absentia and sentenced to seven years in prison.
他被缺席判处七年监禁。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

discarded

v. 丢弃，抛弃( discard的过去式和过去分词 )，不再使用；

例句
If the filter has been saturated with motor oil, it should be discarded and replaced.
过滤器如果已被机油浸透，则应丢弃并换上新的。

during

prep. 在…的时候，在…期间，当…之时，其间；

例句
...the accrual of funds used during construction.
建设过程中资金的累积

two

n. 两个，两个东西，两点钟，一对；adj. 两个的，我

例句
He has been absent from his desk for two weeks...
他已经有两个星期没有坐在办公桌前了。

years

n. 年( year的名词复数 )，年纪，一年的期间，某年级的学生；

例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。

brainstorming

n. 头脑风暴，集思广益；

例句
We are going to do some brainstorming soon.
我们很快就要做些脑力激荡.