And this kinda curls down a little bit so that you get a good, tight seal.

然后把它卷起来，这样就能密封得很好。

After you wrap the body in reflective tape, the ends get Teflon tape so we can get a tight seal.

把主体用反光带包起来之后，末端用铁氟龙胶带缠住，这样封口才会紧密。

If the bromeliad's water tank is too large, then the frog's head can't form a tight seal around the opening.

如果凤梨水池太大，那树蛙的头部就不能形成紧紧锁住凤梨孔的密封盖。

Then, once it is in place, it is partly flooded and allowed to sink to the riverbed around the breach, making a tight seal.

一旦到位，就向拱坝内灌水使它沉到裂口周围的河床上，形成了一道严密的围堰。

And then I also make sure that I go right up into the corners and making sure that we have a nice tight seal of the dough.

然后我还要确保我一直走到角落里，确保我们的面团密封得很好。

But though tighter seals reduce AC or heating bills, they also make it easier for the virus that causes COVID and other germs to accumulate in the air, making us sick.

不过尽管密封严实会减少空调和暖气费，这也会让导致新冠的病毒和其它细菌在空气中积累，令我们生病。

Once the disc presses down on a surface, A tight seal is created from the difference in  pressure between the compartments and environment, and the slight rotation of the lamellae.

一旦圆盘向下压在表面上，隔间和环境之间的压力差以及薄片的轻微旋转就会产生紧密的密封。