I. strengthen [ˈstreŋθən] 动词 trans
II. strengthen [ˈstreŋθən] 动词 不及物动词
| I | strengthen |
|---|---|
| you | strengthen |
| he/she/it | strengthens |
| we | strengthen |
| you | strengthen |
| they | strengthen |
| I | strengthened |
|---|---|
| you | strengthened |
| he/she/it | strengthened |
| we | strengthened |
| you | strengthened |
| they | strengthened |
| I | have | strengthened |
|---|---|---|
| you | have | strengthened |
| he/she/it | has | strengthened |
| we | have | strengthened |
| you | have | strengthened |
| they | have | strengthened |
| I | had | strengthened |
|---|---|---|
| you | had | strengthened |
| he/she/it | had | strengthened |
| we | had | strengthened |
| you | had | strengthened |
| they | had | strengthened |
单语范例（未经PONS编辑处理）
The kettlebell allows for swing movements and release moves with added safety and added grip, wrist, arm and core strengthening.
en.wikipedia.org The aim of the partnership is to support initiatives in developing countries that are working towards strengthening democratic processes and civil liberties.
en.wikipedia.org A strengthening of the engine is necessary in order to meet these higher demands.
en.wikipedia.org Hall presided over a period of boardroom calm at the club, debts were restructured and the funds were made available for team strengthening.
en.wikipedia.org Ways and means of strengthening sustainable and environmentally sound self-development of indigenous peoples.
en.wikipedia.org