stand on a single leg with foot pointing straight ahead and knee slightly flexed while maintaining a stable position over your 2nd & 3rd toe.
单腿站立,另一条腿膝盖略微弯曲对準第二与第三脚趾的位置,脚趾向前,稳定的保持一段时间。
the bird must be able to maintain a stable position space, despite the fact that their wings are beating 75 times per second and that disruptive effects such as wind gusts could throw them off.
「once a runaway instability starts, it cannot be stopped until a new stable position is found [for the ice sheet], 」 writes geophysicist erik r. ivins in an editorial accompanying the science paper.
一旦冰原的稳定性开始失控,就无法剎车了,除非它找到一个新的稳定支撑点。
the utility model has the advantages of simple structure, stable position effects, low manufacture cost, volume reduction in due time and convenient transportation.
本实用新型具有结构简单、定位稳固的功效,同时制作成本低、又能适时地减小体积,便于运输。
when step sizes vary, the ideal stable position will change at each step, and thus the object will jitter (and may very well gain energy!
the protective housing has a lower part with at least one suitably shaped cavity for holding the metering unit(s) in a stable position and a cap-type upper part.