poorly ground

基本解釋

Vibrations in the ground are a poorly understood but probably widespread means of communication between animals.
地面的振動(dòng)雖不為人類所了解，但卻可能是動(dòng)物間最廣泛的溝通方式。
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Radon seeps from certain soils and rocks ( such as granite) into the atmosphere and can accumulate in poorly ventilated spaces near ground level, including house basements;
它從某些土壤和巖石（如花崗巖）中滲漏出來(lái)進(jìn)入大氣，會(huì)在地面附近通風(fēng)不好的空間里（包括地下室）積聚起來(lái)。

On the ground, the army's tactical victories against bands of poorly armed rebels seem simply to prompt the hydra heads of revolt to sprout elsewhere.
ECONOMIST: Syria’s uprising