Dt is the tunnel diameter, and (EI)eq is the equivalent bending stiffness of the tunnel.

Dt 隧道直径，（EI）eq 隧道的等效弯曲刚度。

But when you were a heavy drinker you called it the DTs — good old Ray Milland in Lost Weekend, seeing the bugs coming out of the walls.

然而个酒鬼，称这种现象为震颤性谵妄，就像过去优秀的雷·米兰在《醉乡遗恨》一中，看见虫子不断从墙壁钻出来那般。

Free indirect thought (FIT): It refers to a kind of thought presentation between DT and IT, which is certainly not DT, but takes on some features of the thoughts in the character's mind.

小说家们在表达人物思维所用的区分类别，与用来表达言语用的类别完全相同。直接思维：直接思维倾向于被用来表达有意识的、缜密的思维。自由间接思维：这种思维方式介于直接思维和间接思维之间，有一些思维的特征。