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
It was a pleasant surprise.
那是个惊喜。
When he opened the door the cat ran out and brushed by his legs.
当他一开门，那只猫跳了出来，偎依在他的脚边。
I feel a little afraid, said Kate. I'm sure I can smell something.
“我感到有点害怕，”凯特说。“我敢肯定我觉察到什么了。”