butt against

1

The best thing you can do is scoot your hips and butt against the back of the chair , and use it for support - that 's what it 's there for .

最好的方法是臀部贴着椅背而坐，用椅背撑住你的腰——这正是它之所以在那里的原因。
2

Some pension funds are also concerned that they will butt up against the limits if they have to calculate positions this way .

一些养老基金也很担心如果他们也按这种方式计算持仓也将违背新规定。
3

Now that the inner edges of the left and right visible doorways butt up against each other , we no longer need to keep the left image in the front .

现在，左侧与右侧，可见“doorway”的边缘接在一起，我们再不需要将左边图像保持在上方。