你的意思是？
| I | activate |
|---|---|
| you | activate |
| he/she/it | activates |
| we | activate |
| you | activate |
| they | activate |
| I | activated |
|---|---|
| you | activated |
| he/she/it | activated |
| we | activated |
| you | activated |
| they | activated |
| I | have | activated |
|---|---|---|
| you | have | activated |
| he/she/it | has | activated |
| we | have | activated |
| you | have | activated |
| they | have | activated |
| I | had | activated |
|---|---|---|
| you | had | activated |
| he/she/it | had | activated |
| we | had | activated |
| you | had | activated |
| they | had | activated |
单语范例（未经PONS编辑处理）
She was acquired in 1984 and is in active service as of 2009.
en.wikipedia.org Hull 401 (and possibly 402 as well in the near future) has been retired from active service by 2005.
en.wikipedia.org The bill protected the benefits of state employees called into full-time active service.
en.wikipedia.org However, he did not see active service and was released on health grounds at the end of 1943.
en.wikipedia.org Like almost all her sister ships, she was decommissioned shortly after the end of the war, and never saw active service again.
en.wikipedia.org