The pilot steps backward into the straps of a shoulder harness, his shoulder blades resting against two wide upward-facing fans that provide the thrust.
飞行员站进去后系上肩带。肩胛骨会靠在了两个用于提供升力、仰面朝天的风扇上。
In recent years, the nearsightedness rate of primary and middle school students is showing an upward tendency, which has caused wide public concern.
近年来，中小学生视力不良检出率呈上升趋势，其视力健康问题已经引起越来越广泛的关注。
Upward-fining channels may occur in a wide range of environments from submarine canyon to alluvial fan.
向上变细的水道可以出现在好多种环境中，从海底峡谷到冲积扇。
Upward-fining channels may occur in a wide range of environments from submarine canyon to alluvial fan.
向上变细的水道可以出现在好多种环境中，从海底峡谷到冲积扇。
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