| I | cement |
|---|---|
| you | cement |
| he/she/it | cements |
| we | cement |
| you | cement |
| they | cement |
| I | cemented |
|---|---|
| you | cemented |
| he/she/it | cemented |
| we | cemented |
| you | cemented |
| they | cemented |
| I | have | cemented |
|---|---|---|
| you | have | cemented |
| he/she/it | has | cemented |
| we | have | cemented |
| you | have | cemented |
| they | have | cemented |
| I | had | cemented |
|---|---|---|
| you | had | cemented |
| he/she/it | had | cemented |
| we | had | cemented |
| you | had | cemented |
| they | had | cemented |
单语范例（未经PONS编辑处理）
In this process, the steps of raw material processing, fuel preparation, clinker burning and cement grinding constitute major emission sources for particulate components.
en.wikipedia.org They had a belief that cemented their directions and determined their path of development.
en.wikipedia.org The majority of silica cements are composed of quartz but can include, chert, opal, feldspars and zeolites.
en.wikipedia.org There are several different energetically modified cements depending on the raw materials used.
en.wikipedia.org The port's chief exports include jute, leather, tobacco, frozen fish, and shrimp; major imports include grain, cement, fertilizer, coal, and wood pulp.
en.wikipedia.org