求翻译：加入乙醚后，先用右手食指的末节将漏斗上端玻璃塞顶住，再用大拇指及食指和中指握住漏斗，这样漏斗转动时可用左手的食指和中指蜷握在活塞的柄上，使振摇过程中玻璃塞和活塞均夹紧。是什么意思？

Diethyl ether, first with the right index finger distal funnel the top of the glass stopper to withstand, and then the thumb and index finger and middle finger to hold the funnel, so that the funnel rotation can be used left hand index and middle fingers curled grip on the handle of the piston, so t

In ether, first with his right hand index finger on the end section will funnel end against the glass, then with the thumb and index finger and middle finger while holding the funnel funnel, available when turning left index finger and middle finger curled up in the piston grip on the handle, so tha

After joins the ether, uses the right hand index finger the details to withstand first the funnel upper extreme glass cock, then uses the thumb and the index finger and the middle finger grips the funnel, such funnel rotates when the available left hand index finger and the middle finger curl up gra

After joining the ether, you with your right index finger distal segment of the funnel glass stand up on the top, then hold the funnel with thumb and forefinger and middle finger, so funnel's Ninagawa available when you turn the left hand index finger, and middle finger grip on the handle of the pis

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