Reactive
[ [ri'æktiv] ]
成人 Adult Edu
a. 反动的, 反应的\\n[医] 反应的
🗣️ 情景例句
Not as happy as I am.
我比你更高兴。
Would you care to take a seat while I make out a receipt?
请坐一会儿好吗？我给您开个收据。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。