Monoprop
丙酸
🗣️ 情景例句
How wonderful to meet you again!
又一次见到您真是太高兴了！
Virtue is her (or its) own reward.
为善最乐。
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。