1 to watch sb/sth carefully, especially to learn more about him/her/it 观察,观测(尤指为了更好地了解某人或某事物):
We observed the birds throughout the breeding season.整个繁殖季节我们都在观察那些鸟类。
2 (formal 正式) to see or notice sb/sth 看到;注意到:
A man and a woman were observed leaving by the back door.有人看到有一男一女从后门离开。
3 (formal 正式) to make a comment 发表评论:
‘We're late,’ she observed.“我们迟到了。”她说。
4 (formal 正式) to obey a law, rule, etc 遵守,奉行(法律、规则等):
to observe the speed limit遵守车速限制