In this sentence

①sb / sth be calmadj.镇静的；心平气和的

Synonymspeaceful, tranquil, serene, composed

在本句中，calm 作为形容词修饰 a feeling，与 peaceful 并列，表示情绪或内心状态是“平静的、不焦躁的”。

• To be calm is the highest achievement of the self.保持平静是自我修养的最高境界。— Zen proverb

②calm sb / sth (down)v.使平静；使镇定

Synonymssoothe, pacify, comfort

• You cannot calm the storm, so stop trying. What you can do is calm yourself.你无法平息风暴，所以别再徒劳；你能做的是让自己平静下来。— Timber Hawkeye

③the calm before the stormn.平静；宁静

Synonymspeace, quiet, stillness

• Enjoy the calm before the storm, but be ready to dance in the rain.享受暴风雨前的宁静，但也随时准备好在雨中起舞。

①claim that / to do sthv.声称；自称

Synonymsassert, maintain, allege

• Those who claim that they can understand quantum theory either lie or are crazy.那些自称懂得量子理论的人，要么是在撒谎，要么是疯了。— Carl Sagan

②make a claim (for / on sth)n.索赔；主张

Synonymsdemand, application

• Modesty makes a claim for our respect, where vanity only excites our ridicule.谦逊赢得我们的敬重，而虚荣只招致我们的嘲弄。

③claim sthv.认领；索取

Synonymscollect, retrieve, take

• He who dares to claim his freedom must also dare to bear the burden of choice.敢于索取自由之人，必得敢于承受选择之重。

④claim livesv.夺走（生命）

Synonymstake, cost

• Wars claim lives, but hatred claims the future.战争夺走生命，而仇恨剥夺未来。