Land mines are small bombs hidden in the ground and designed to explode when someone steps on them.

地雷是隐藏在地下的小炸弹，当有人踩到它们时，就会爆炸。

youdao

Members of all parties endorsed a ban on land mines.

各党派成员都赞同禁用地雷。

《牛津词典》

One of the biggest land mines to efficient time management is recognizing you don't have to agree to everything and with everyone.

高效时间管理的一个最大的方面是，意识到你不必同意所有的事情，答应所有的人。

youdao

The great wealth taken from the gold and silver mines was usually invested in other businesses: shipping,railroads,factories, stores,land companies.

VOA: special.2010.03.18

For a company with an unusual way of treating its workers, any acquisition has land mines.

FORBES: U.S. Bosses

The troops are also prepared for the dangers posed by land mines planted during the war.

CNN: Troops in Bosnia

In Tanzania, mine-sweepers are training local rats, which scratch when they sniff out land mines.

WSJ: Sniffing Out a More-Efficient Mine Sweeper