E. d.
[医] 红斑量, 有效量
🧩 词语组成解析
[医] 电子\\n[经] 东
🗣️ 情景例句
Come on!
过来！
This week he took his first vacation from work in five years.
五年来，他本周破例第一次休假。
engineers may soon be free to let their imaginations soar without being penalized by expensive failures.
因此，工程技术人员可能很块就可充分发挥他们的想像力，而不会因失败而造成经济上的损失。