hǎi dǐ
seabed
seafloor
bottom of the ocean
hǎi dǐ lāo yuè
to fetch the moon from the seabed (idiom); a hopeless illusion
hǎi dǐ lún
mūlādhāra or muladhara, the root or Saturn chakra 查克拉, residing in the coccyx
hǎi dǐ kuò zhāng
seafloor spreading (geology)
hǎi dǐ kuò zhāng shuō
theory of seafloor spreading (geology)
hǎi dǐ lāo zhēn
see 大海撈針|大海捞针[da4 hai3 lao1 zhen1]
hǎi dǐ yē
coco de mer or "sea coconut" (Lodoicea maldivica)