adj. 额外的,补充的,附加的;特大的,特别的;
n. 附加物,额外的事物;临时演员;号外;上等产品,上品;
adv. 额外地;格外地,特别地;
extra=out出去 → 出去的 → 余出的 → 额外的
🗣️ 情景例句
Please give me a general view first, will you?
首先,请给我一个大概的介绍,行吗?
Watch out, it's dangerous.
注意,危险啊!
New Zealand is an impotant agricultural country with a small population. In size it is bigger than Guangdong Province, yet has a much smaller population.