1、He suggests establishing a trial period and a date for review.
他建議設定一段試行期，并確定一個重新評估日期。

2、The trial period was over, and I could settle down to building a closer contact with the apes.
嘗試階段結(jié)束了，我可以安定下來，跟大猩猩建立更加親密的聯(lián)系了。

3、Let new customers know they can cancel for any reason before the trial period expires.
讓新客戶知道在試驗期間他們可以無條件取消訂單。

trial period翻譯