Nuts and bolts, tire reinflated to 200 psi, hubcap back on, and the whole thing is gently lowered 5 centimeters back onto the ground.

安装螺母、螺栓、将胎加压到两百磅，安盖，把整个胎缓慢放低五厘米，返回地面。

He pointed unnecessarily long to the hole and explained: " According to the illustration, the bolt should fit in there" .

他过长地指着孔并解释说：“根据图，螺栓应该安装在那里”。

We put extra bolts on the hatches; and, in order to make our sub absolutely silent, we turned off the fans, the cooling system, and all electrical gear.

我们在舱口安装了额外螺栓；而且，为了让我们绝对安静，我们关闭了风扇、冷却系统和所有电气设备。

Investigators have found that four critical bolts were not restored at a Boeing factory to secure the door plug, thereby leading the plug to blow out of the fuselage of a 737 MAX 9 plane in midair.

调查人员发现， 波音工厂未能重新安装四个关键螺栓以固定舱门件，导致该件在737 MAX 9飞机飞行途中从机身脱落。