impact

The strong effect that something has on a situation or person; the force of one object hitting another.

• impact/ɪmˈpækt/(v)影响；冲击 (informal)
• impactful/ˈɪmpæktfəl/(adj)有影响力的

• significant impact
• positive impact
• measure impact
• impact on
• wider impact
• long-term impact

1. 1.The intervention had a measurable impact on students' reading levels, particularly among those who had fallen furthest behind.
2. 2.We need to assess the full impact of the policy change before deciding whether to roll it out nationally.

• effect/ɪˈfekt/— a result produced
• consequence/ˈkɒnsɪkwəns/— an outcome
• influence/ˈɪnflʊəns/— the power to affect

from Latin "impactus," past participle of "impingere" (to push against)