土留水份的英文：
unavailable moisture

The directory service is unavailable.
该目录服务不可用。

All proxy servers are unavailable.
所有代理服务器都不可用。

This option is unavailable for this type of external database.
该操作不适用于该类型的外部数据库。

Files Left Open on Unavailable Shares
文件在无效的共享上处于打开状态

This command is unavailable if there is no data currently selected.
如果当前没有选择数据，这个命令是无效的。

Moisture is vital for germination.
潮湿对于发芽很重要。

Air and moisture tarnish silver.
空气和潮湿使银子失去光泽。

Humidity is a measure of moisture in the atmosphere.
湿度是空气内含水分多少的量度。

Milk has the effects of cleansing and moisturizing.
牛奶具清洁及滋润作用。

Moisture welts: Wrinkles in a paper roll caused by moisture absorption after drying.
水痕:纸卷在干燥后吸收水份而起皱的情况。