There are nine trees in Xiao Ming's backyard.

小明家的后院有九棵树。

youdao

The Nine Peaks in Songjiang are the only natural hills in Shanghai. Green trees amid the hills and red-roofed houses set off one another, with dense forests covering in the surface of the hills.

松江九峰是上海唯一一处自然山丘，山间绿树红楼掩映，山体表面林木深秀。

youdao

The report says the plan endangers rare species of trees and birds; nine found only in Mabira risk extinction.

报告说计划会危及稀有树木和鸟类物种；马拉比仅有9种濒危物种。

youdao

Along its length, high grasses, wildflowers and even trees sprang up, creating a nine metre-high streak of greenery in the Lower West Side.

BBC: Walking New York City��s High Line

Cork trees can survive 250 years but their reddish trunks can only be stripped every nine years, with the best wood coming only after three yields.

WSJ: Cork's Popping Potential