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step sth ↔ up

更新日期:2026-08-14

词语 step sth ↔ up
释义

step sth ↔ up to increase the amount of an activity or the speed of a process in order to improve a situation使增加; 使上升; 使加快:•The health department is stepping up efforts to reduce teenage smoking.卫生部门加紧努力以减少青少年吸烟。•stepped-up security at airports加强了的机场安全措施

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