求翻译：因此，本文首先将样本公司分为两组，一组是使用股票期权的样本公司及其配对样本公司，一组是使用限制性股票的样本公司及其配对样本公司。是什么意思？

Therefore, this article first sample companies are divided into two groups, one group is the use of stock options, matching the sample and its sample of companies, a group of samples is the use of restricted stock and its paired sample companies.

Therefore, this article will first sample Company divided into two groups: one group is to use the sample company stock options and its matching samples, a group company is the use of restrictive Stock Company and its matching samples sample Company.

Therefore, this article first divides into the sample company two groups, a group is uses the stock option the sample company and the pair sample company, a group is uses the restrictive stock the sample company and pairs the sample company.

Therefore, this article first sampled companies fall into two groups, one group is to use the sample company stock options and the paired two sample companies, a sample of the groups is the use of restricted stock companies and their paired two sample companies.

Therefore, this article first sample companies are divided into two groups, one group is the use of stock options, matching the sample and its sample of companies, a group of samples is the use of restricted stock and its paired sample companies.