Yabla video uses of 命脉

认为 rènwéi
bǎn
应该 yīnggāi
shì
jiàn
衣服 yīfu
de
命脉 mìngmài
I believe pattern making is the lifeblood of clothing.
因为 yīnwèi
石油 shíyóu
shū
出国 chūguó
shì
kào
石油 shíyóu
shì
de
经济 jīngjì
命脉 mìngmài
Because oil exporting countries rely on oil. It's their economic lifeline.