If necessary
辅助 Assistant如果必要的话
🧩 词语组成解析
if
[if]
conj. 如果，倘若;即使;〈口〉是否;假设;
n. 条件，设想;
🗣️ 情景例句
They're both very good buys.
这两栋都是价格便宜的。
Many dishes,many diseases.
食多病多。
Why didn't you tell her to use her own?
你为什么不叫她用自己的？