Guaranteeing
vt. 保证, 担保（guarantee的现在分词形式）
✅ 同义词
🗣️ 情景例句
He always performs his tasks perfectly.
他总是圆满地完成工作。
Don't forget to print airmail on the letter.
不要忘记在信封上印上航空邮件
It's a pity I didn't think of it earlier.
很可惜，我没有早一点想起这事来。