experimental
adj. 实验性的，试验性的；<古>根据经验的，经验上的
例句
The equipment is still at the experimental stage.
这种设备仍处于试验阶段。
《牛津词典》
The senator is ready to argue for an experimental lifting of the ban.
该参议员已准备好争取那条禁令的试验性解除。
《柯林斯英汉双解大词典》
For the time being, however, immunotherapy is still in its experimental stages.
然而，目前免疫疗法还处于试验阶段。
