to back up [动词] 支持 Ex: The coach consistently backs up his players , fostering team spirit . 教练一贯支持他的球员,培养团队精神。
to prop up [动词] 提供财政支持 Ex: In times of economic downturn , the central bank might take measures to prop up the currency . 在经济低迷时期,中央银行可能会采取措施来支撑货币。
to sit up [动词] 熬夜 Ex: They like to sit up and chat with friends when they come over for a visit . 他们喜欢在朋友来访时熬夜聊天。
to stand up for [动词] 捍卫 Ex: The community members stood up for social equality and fought against discrimination . 社区成员站出来支持社会平等,并与歧视作斗争。
to stay up [动词] 熬夜 Ex: The writer stayed up writing the final chapter of their novel, eager to finish the story. 作家熬夜写小说的最后一章,渴望完成这个故事。