drop drop by

Drip, or "micro" irrigation, as the name suggests, is stingier with the water, delivering it to the roots of plants drop by drop.

滴灌，或者“微”灌溉，顾名思义，是更吝啬于水，把水一滴一滴地滴到植物的根部。

If you are adding a "Drop shadow" layer effect, and you have the layer Style dialog open to the Drop shadow Settings, you can move the shadow around by clicking and dragging in the image.

如果你下大添加一个“投影”的图层效果，并且你已经打开了图层样式的对话框并进行了投影设置，你可以通过点击并拖动图形的阴影来移动图形的投影。

The risk of heart attack and stroke starts to drop immediately after a person stops using tobacco products, and can drop by as much as half after one year.

好消息是在人们停止使用烟草制品后心脏病发作和中风的危险立即开始下降，并且在一年后可下降达一半。