如果灯亮了又灭了好几次，海豚就应该先按左手的杠杆，再按右手的杠杆。

If the light flashed on and off several times, the dolphins were supposed to press the left-hand lever followed by the right-hand one.

youdao

杠杆和光的设置完全一样，只不过这次只有多莉丝能看到先按哪个杠杆的灯的指示。

The levers and light were set up in exactly the same way except that this time it was only Doris who could see the light indicating which lever to press first.

youdao

首先按一下大水罐把它加满冰水。

First click on the pitcher to fill it with ice water.

youdao

So on the one hand--temporal sequence-- first you know Ruth, you meet Ruth, you get to know Ruth.

所以一方面,按时间顺序来说,你需要先知道露丝,见到露丝 了解露丝

耶鲁公开课 - 死亡课程节选