Uphill and downhill should be done once.

上坡和下坡应当各做一次。

youdao

The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate.

本文将倾斜长壁仰斜、俯斜开采的老顶岩层视为倾斜弹性板。

youdao

Participants should have basic cycling knowledge and ensure that they can control the bicycles properly during uphill and downhill.

参加者应懂得基本驾驶单车技术，能掌握上斜和落斜之技术。

youdao

There are far more blind shots around dunes and mounds, and players will hit lots of shots from uphill and downhill lies.

BBC: Carnoustie

She and Lei could have ended their marriage on a balcony like this on a mild day during the snow season, their last shared memories the white mountains close by, the ski lifts moving tirelessly and smoothly uphill and downhill, and small colorful dots sliding down the slopes: actions viewed from afar.

NEWYORKER: Alone