witness

1. N-COUNT A witness to an event such as an accident or crime is a person who saw it. 目击者

Witnesses to the crash say they saw an explosion just before the disaster. 这起坠机事故的目击者说, 在灾难发生之前他们看到了爆炸。

2. V-T If you witness something, you see it happen. 目击

Anyone who witnessed the attack should call the police. 任何目睹了那场攻击的人都应该报警。

3. N-COUNT A witness is someone who appears in a court of law to say what they know about a crime or other event. 证人

In the next three or four days, eleven witnesses will be called to testify. 在随后的三四天里，11名证人将传唤来作证。

4. N-COUNT A witness is someone who writes their name on a document that you have signed, to confirm that it really is your signature. 连署人

The codicil must first be signed and dated by you in the presence of two witnesses. 该遗嘱附件必须首先由你当着两个连署人的面签名并写上日期。

5. V-T If someone witnesses your signature on a document, they write their name after it, to confirm that it really is your signature. 连署

Ask a friend, (not your spouse), to witness your signature. 请一位朋友（不可以是你的配偶），来连署你的签名。

6. V-T If you say that a place, period of time, or person witnessed a particular event or change, you mean that it happened in that place, during that period of time, or while that person was alive. 见证

India has witnessed many political changes in recent years. 印度近些年见证了许多政治变革。