除了装纸和换墨盒(我想只有一次)，这是一条不需维护的恐龙，我们不打算丢掉它。

Other than putting in new paper and changing the ink cartridge (only once, I think), it's a maintenance-free dinosaur that we have no intention of tossing out anytime soon.

youdao

为了防止这种情况发生，避免用过大的上紧力，并且每次换钢瓶的时候装一个新的垫圈。

To prevent this from happening, avoid excessive tightening force and install a new gasket with every cylinder change.

youdao

要得到最好的成效，每次换钢瓶的时候装一个新的垫圈。

For best results, install a new washer with every cylinder change.

youdao

I if I go over here, and I say float of three, it's going to do the conversion.

用float来处理3，它将能完成装换，但是如果我吧这个转化为浮点数。

麻省理工公开课 - 计算机科学及编程导论课程节选