at no period的意思|示意

At the end of the trial period, the researchers found no changes in natural killer cell activity except in the group taking fish oil.

在试验末期，除了服用鱼油的组，研究人员没有发现自然杀伤细胞活性有变化。

No later than at the start of the comment period, the standardizing body shall publish a notice announcing the period for commenting in the publication referred to in paragraph J.

标准化机构应不迟于征求意见期开始时，在J款提及的出版物上发布关于征求意见期的通知。

The group on placebo pills showed improvements both at the half way point and at the end of the period, when compared with the no-treatment group.

相对于不做任何处理的那组，服用安慰剂的病人在第二周开始和结束时病情都有所好转。

If we do not reach a deal at this time, let us be in no doubt: once the damage from unchecked emissions growth is done, no retrospective global agreement in some future period can undo that choice.

如果我们此刻不能达成协议，那么毫无疑问：若温室气体排放的增长不加控制，其伤害一旦造成，未来任何追溯性的协议也无法消除这一选择造成的后果。

During this formative period, graduates are no longer in the home or at the university.

在这段逐渐成形的时期，毕业生不再呆在家里或学校。

The system is expected to last 10 years, and have no salvage value at the end of the period.

该系统预计在过去10年，并没有残值在期限结束时。