1. 'catalpa'是英语中的词语，中文翻译为'紫荆树'。
2. 紫荆树是一种落叶乔木，常见于北美地区。它具有大叶子，白色花朵和长而扁平的豆荚果实。
3. 例句：
- The catalpa tree in my backyard is blooming beautifully. (我后院的紫荆树正开着美丽的花。)
- The caterpillars of catalpa sphinx moths feed on the leaves of catalpa trees. (紫荆树天蛾的毛毛虫以紫荆树的叶子为食。)
- The wood of catalpa trees is sometimes used for making fence posts. (紫荆树的木材有时被用来制作栅栏柱。)
- The shade provided by the catalpa tree is perfect for picnics. (紫荆树提供的遮荫正好适合野餐。)
- The catalpa tree is a host plant for the catalpa sphinx moth. (紫荆树是紫荆树天蛾的寄主植物。)
- The catalpa tree can reach heights of up to 18 meters. (紫荆树可以长到18米高。)
- The bark of the catalpa tree is grayish-brown in color and has deep ridges. (紫荆树的树皮呈灰褐色，纹理深刻。)
- The catalpa tree is often planted as an ornamental tree in gardens and parks. (紫荆树常被种植为花园和公园的观赏树。)
- The catalpa tree is resistant to pollution and can be grown in urban areas. (紫荆树耐污染，可以在城市地区种植。)
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