His pack was heavy and lumpy, bumping against his back.

他那沉重的背包，不断地击打他的背。

The man bumped against tables and chairs, trying to get away.

那人撞在桌子和椅子上，试图逃跑。

The room was dark and I bumped my head against the door.

房间里很暗, 所以我的头才撞上门。

" Oof. Ugh, " he grunted as he gently bumped against it over and over.

“啊。呃。”他一边咕哝着，一边一次又一次地轻轻撞击罐子。

Those little molecules and atoms bumping around against your hands as you wave them around.

你挥手时那些小分子和原子会撞到你的手。

The way your body's moving around might bump the two layers against each other, too.

你身体的活动也可能让两层膜互相碰撞。

Too many talented women try their hardest to reach the top and bump up against systemic barriers.

我也知道很多极富才干的女性在为进入高层竭尽全力，极力清除着前进道路上的障碍。

I don't want to bump her head against the door, you know, pinch her with the seat belt.

我不想又把她头撞到门上了，或者说，绑安全带的时候夹到她。

My heart bumped awkwardly against my ribcage.

我的心笨拙地撞在我的胸腔上。

Their fields bump up against the nearby towns.

他们的田地与附近的城镇相撞。

But then, he bumps up against its rules.

但后来，他却违反了规则。

I ran after him, bumping against people in my hurry.

【bump】我在后面追他，匆忙之中撞到了别人身上。

I think we bump up against mathematics all the time.

我想我们总是会碰到数学。

That way your thumb doesn't bump up against the mark.

拇指不戳冤大头。

They seek expansion through diversification, even if that means bumping up against rivals.

它们通过多样化寻求扩张，即使这意味着与对手发生冲突。

Meaning, you probably hit your nail, or you bumped it against a desk or a table.

意思是，您可能碰到了指甲， 或者撞到了桌子或桌子。

The skull went tumbling out of her hands and bumped up against a planterful of daisies.

头骨从她手中滚落， 撞到满盆的雏菊上。

Dramatically different ecosystems can even bump up against each other — imagine a watery oasis in the middle of the Sahara Desert.

截然不同的生态系统甚至可以相互碰撞——想象一下撒哈拉沙漠中部的一片水绿洲。

Chunks of ice will bump against each other creating elliptical shaped discs with round edges, giving each one a flat, round appearance.

冰块会互相碰撞，形成边缘为圆形的椭圆圆盘，使得每一个圆盘都呈现出扁平、圆形的外观。

The firefly bumped against the glass walls and tried to fly, but its light remained dim.

萤火虫撞着玻璃墙，试图飞翔，但光芒依然暗淡。