Step 3: Use a pencil to make a hole into both sides of the tube.

第三步：用铅笔在试管的两边都戳一个洞。

youdao

If you want to slip into a round hole, you must make a ball of yourself.

如果你想自己能溜进圆孔，那么你就必须使你自己成为球状物。

youdao

If you want to slip into a round hole, you must make a ball of yourself.

如果你想自己能溜进圆孔，那么你就必须使你自己成为球状物。

youdao