bolt

The mechanic used a large wrench to tighten the rusty bolt on the car's engine.

(Chinese) 技工用一把大扳手拧紧了汽车发动机上生锈的螺栓。

A single loose bolt in the bridge structure caused the engineers to close the road for repairs.

(Chinese) 桥梁结构中一个松动的螺栓导致工程师关闭了道路进行维修。

The deer will bolt into the thick forest as soon as it hears a twig snap.

(Chinese) 鹿一听到树枝折断的声音，就会立刻逃进茂密的森林里。

When the fire alarm went off, the scared cat decided to bolt under the sofa.

(Chinese) 当火警响起来时，受惊的猫决定飞快地窜到沙发底下。