"Observe" 是英文中常用的一个动词，意思是观察、看、注意到。在英文中，要表示要多观察的意思，可以使用以下短语和句型：
Pay close attention to: 密切注意
Keep an eye on: 密切注意，留意
Watch carefully: 仔细观察
Take a closer look at: 仔细看
Look closely at: 仔细看
例句：
Pay close attention to the instructions before starting the experiment. 在开始实验之前，请仔细阅读说明。
Keep an eye on the time. 请留意时间。
Watch carefully as I demonstrate the technique. 当我演示技术时，请仔细观察。
Take a closer look at this chart. 请仔细看这张图。
Look closely at the details in this painting. 请仔细看这幅画的细节。
Pay close attention to: 密切注意
Keep an eye on: 密切注意，留意
Watch carefully: 仔细观察
Take a closer look at: 仔细看
Look closely at: 仔细看
例句：
Pay close attention to the instructions before starting the experiment. 在开始实验之前，请仔细阅读说明。
Keep an eye on the time. 请留意时间。
Watch carefully as I demonstrate the technique. 当我演示技术时，请仔细观察。
Take a closer look at this chart. 请仔细看这张图。
Look closely at the details in this painting. 请仔细看这幅画的细节。