The bright red color of a fire urchin warns predators that its spines are poisonous. Sea otters are the major predators of sea urchins.

火海胆鲜红的颜色警告捕食者它的刺有毒。海獭是海胆的主要捕食者。

youdao

I was sitting in a small restaurant by the sea while the cook was cooking fish over a fire for lunch.

我坐在海边的一家小餐馆里，厨师正在用火煮鱼做午餐。

youdao

It's a place where you can see the cost of the struggle, like the Ottoman-era buildings with their roofs blown off and sea walls raked by machine-gun fire.

在这里你可以亲眼看到战争必须付出的代价：奥特曼时代的古老建筑被炮火掀去了屋顶，墙壁上到处是机关枪留下的累累弹痕。

youdao

I have said it will be a sea of fire, a sea of flames.

VOA: standard.2010.07.13

President Obama will speak after returning from his fourth trip to the Gulf region since the April 20 explosion and fire, which killed 11 workers and ruptured a deep-sea oil well.

VOA: standard.2010.06.15

Even so, not everyone believes North Korea could make good on its "sea of fire" threats.

NPR: Despite Threats, Risks Temper Korea War Tensions

The weapons tests have been accompanied by a spike in hostile North Korean rhetoric including a threat to attack Washington and turn South Korea into a "sea of fire" and a repudiation this week of the 1953 Korean War armistice.

WSJ: U.S. to Boost Missile Defenses in Response to North Korea

This week North Korea's official news agency threatened to destroy South Korea in a "sea of fire, " and "reduce everything treacherous and anti-reunification to debris and build an independent, reunified country on it, " if any country dares to attack its nuclear installations.

CENTERFORSECURITYPOLICY: The 'realist' fantasy