下降: descend; go or come down; drop; fall; decrease (in); decline; fall off; droop; downgrade 短语和例子逐渐下降 decrease by degrees; 生产[体重] 下降 decrease in production [weight]; 引起下降 bring about its decl
从绝望之山上砍下来一块希望之石: hew out of mountain of despair a stone of hope