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
Camping out is such great fun.
露营是件非常好玩的事。
The roofer is patching the roof with metal.
屋面防水工在用铁皮修补屋顶。
OK. Our plan is to produce an advertisement for this famous computer which is supplied by one of China's biggest computer producers-Legend Computer Group Corporation. Any ideas?