['æstɑːr]

n. 星，星形物；A*算法，A*搜索算法；最佳路径算法

英文解释：

1. a star-shaped figure

2. an algorithm for finding the shortest path between two points in a graph

3. A* search algorithm is used in many applications, such as route planning, video games, and robotics.

用法：

1. Astar can be used to represent a star symbol.

2. The A* algorithm is often used in computer science and artificial intelligence.

3. The A* search algorithm is commonly used in navigation systems to find the most efficient route.

例句：

1. The Christmas tree was adorned with shiny astars.

圣诞树上挂满了闪亮的星形装饰物。

2. The programmer implemented the A* algorithm to solve the maze.

程序员使用A*算法来解决迷宫问题。

3. The GPS uses the A* search algorithm to calculate the fastest route.

GPS使用A*搜索算法来计算最快的路线。

同义词及用法：

1. star - a luminous celestial body that generates its own light

2. asterisk - a symbol (*) used to indicate a footnote or omission of letters in a word

3. superstar - an extremely famous and successful performer or athlete

编辑总结：

astar是一个多义词，可以表示星形物，也可以指代一种最佳路径算法。它在计算机科学和人工智能领域被广泛使用，在各种应用中都起到重要作用。除了常见的意思外，它还有一些近义词，如star、asterisk和superstar。总的来说，astar是一个重要的概念，在现代社会中发挥着重要作用。