harmlessness
(physiology) Describing a decrease in both blood pressure and pulse pressure
The characteristic of being harmless; the absence of harm.
A part of various forms of mask or helmet that covers the nose and/or mouth and eyes.
(mineralogy) A rare hexagonal cadmium selenide mineral, black to grey in colour.
その植物が無害であるという特性が、葉を誤って食べてしまうかもしれないペットを心配していた庭師たちを安心させた。
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