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Myxedema coma is a life-threatening disease rarely reported in Taiwan.

黏液水肿性昏迷是危及生命的内科急症之一，然而在台湾很少个案报告。

To be noticed that the spiral grains on the surface of nacreous layer of Hyriopsis schiegeli shells and its pearls are rarely found in other fresh water cultured pearls.

值得注意的是，在池蝶蚌贝壳及其珍珠的珍珠层表面出现螺旋状纹理，这种现象在其它的淡水珍珠（如三角帆蚌贝壳及其珍珠）中极为少见。

But no one owns the high seas, and partisans rarely have access to serious naval power.

但是公海不属于特定国家所有，而各种游击组织又几乎不可能拥有真正意义上的海军力量。

Seeds navicular, convex on 1 side, with a deep groove on other; pedicel as long as or longer than bract, rarely slightly shorter.

种子舟形，凸的在一边上，具一个深的槽沟在另1面；花梗等长或长于苞，很少稍微有点短。

Flowers solitary in leaf axils, rarely clustered, bisexual; bractlets 2, navicular, usually shorter than perianth.

花单生于叶腋，很少簇生，两性；小苞片2，舟形，通常是短于花被。

Bractlets developed, herbaceous or succulent, navicular or similar to leaves, surrounding perianth (in Sympegma bractlets absent, but flowers fascicled at apex of branchlets); stigmas papillose only adaxially; embryo conic-spiral rarely planospiral

小苞片发展， herbacfous或肉质的，具小乳突的柱头只正面；很少的胚圆锥形螺旋形平面螺旋状 4

Autonomous navigation is a key technology in lunar rover system, but rarely involved in virtual simulation system.

自主导航技术是月球车系统的一项关键技术，但月球车虚拟仿真系统中却很少涉及。

Ent rarely ventures outside without a camera hanging around his neckband he figures he now has about 750,000 photographs of people using public spaces.

ENT每次出门都要把照相机挂在脖子上，他说他目前拥有75000张照片。这些照片都是有关人们如何运用他们的公共空间。

Petals elliptic to suborbicular, entire, slightly concave or forked-lobed with 2 empty anthers, rarely with a nectary.

花瓣椭圆形到近圆形，全缘，稍凹或分叉浅裂具空花药，很少具蜜腺。

Tepals 6, free, usually with dark spots or blotches, usually papillose at apex; inner ones with nectary processes on both sides (rarely on 1 or neither side) of a short, median channel at base adaxially.

花被片6，离生，通常具黑点或者大块斑点，通常具小乳突的在先端；内部花被具蜜腺一短的两面突起的(很少在1或两边都不)，中间的沟在正面基部的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。