/ˈlædər/

noun

1. a piece of equipment used for climbing up and down, consisting of two long pieces of wood or metal joined by steps or rungs

梯子（用于攀爬上下的器具，由两根长木材或金属连接而成，中间有横档或踏步）

1. I need to use a ladder to reach the shelf.

我需要用梯子来到达顶层架子。

2. The firemen quickly climbed up the ladder to rescue the cat from the tree.

消防队员迅速爬上梯子从树上救出了猫。

3. She carefully climbed down the ladder after finishing her work on the roof.

她在屋顶完成工作后小心地爬下梯子。

4. The ladder was too short to reach the window on the second floor.

这把梯子太短了，无法到达二楼的窗户。

5. He used a rope ladder to climb up the side of the building.

他用绳梯沿着建筑物的侧面攀爬上去。

synonyms: steps, rungs, stairs, staircase

Ladder is a versatile tool that has been used by humans for thousands of years. It consists of two long pieces of wood or metal connected by steps or rungs, providing a way for people to climb up and down structures such as buildings, trees, or cliffs.

The word "ladder" comes from the Old English word "hlæder," which means "that which leans." This accurately describes how ladders are often leaned against a structure for use. In modern times, ladders are commonly made of aluminum, fiberglass, or wood and come in various sizes and types for different purposes.

Ladders have been an essential tool in various industries such as construction, firefighting, and rescue operations. They are also used for household tasks such as changing light bulbs or reaching high shelves. Additionally, ladders are popular in sports like rock climbing and pole vaulting.

There are different types of ladders, including step ladders, extension ladders, and platform ladders. Step ladders have a fixed height and a hinged design that allows them to be folded for easy storage. Extension ladders can be extended to reach higher areas and are commonly used for outdoor tasks like cleaning gutters or painting walls. Platform ladders have a platform at the instead of steps, providing a stable surface for working at heights.

Ladders can be dangerous if not used properly. It is important to follow safety precautions when using a ladder, such as ensuring it is placed on stable ground and not overreaching while standing on it.

In summary, a ladder is an essential tool for climbing up and down structures. It consists of two long pieces of wood or metal connected by steps or rungs. Ladders come in various types and sizes for different purposes and have been used by humans for centuries. Safety measures should always be followed when using a ladder to avoid accidents.