actual filling depth的用法和样例：
- Then, the bamboo-leaf wrappers had made it hard for him to nibble any of the actual filling, but he'd always managed to squeeze a little bit out through one of the corners.
- They do not actually fill the grain unless you spray on at least 5 coats, sanded between each coat.
- It took me quite a while to fill out the questionnaire.
- Fill your radiator with water, or your engine will overheat.