The easier level of the challenge requires flights of 90 seconds and a landing on a small, flat circular pad.

稍容易的初级挑战级别要求飞行90秒，然后在一个小型圆形平台上降落。

youdao

The model of infrapatellar fat pad and synovium injury was established, and the level of SP, CGRP and NPY were observed.

本研究通过建立膑下脂肪垫和滑膜损伤的模型，观察神经肽sp、CGRP和NPY的水平变化。

youdao

When standing on a level surface, the hind feet are set back from under the body and the leg from pad to hock is at right angles to the ground.

当他站在水平的地面上时，后足爪位于身躯后方(不在身躯正下方)，从脚垫到飞节垂直于地面。

youdao

The school was built into a down-slope, so the recess yard in front of the school was a flat pad of concrete below street level.

CNN: Excerpt: 'Joe DiMaggio: The Hero's Life'

Plastic Logic created QUE to feel as natural in your hand as a pad of paper, while conveying the level of premium quality craftsmanship of a fine pen.

ENGADGET: Plastic Logic debuts QUE proReader, shows off truVue publications