mountainous

1. ADJ A mountainous place has a lot of mountains. 多山的

...the mountainous region of New Mexico. …新墨西哥州的多山地區。

2. ADJ You use mountainous to emphasize that something is great in size, quantity, or degree. 巨大的; 大量的[ADJ n] [強調]

The plan is designed to reduce some of the company's mountainous debt. 制定這個計劃是爲了減少該公司的一部分巨額債務。