凉薯

例句：

1. 1. This is the first time I've tried sweet potatoes.
   这是我第一次尝试甘薯。
2. 2. The sweet potatoes are ready to be roasted.
   这些甘薯准备好了要烤了。
3. 3. Sweet potatoes are a great source of vitamins and minerals.
   甘薯是维生素和矿物质的极佳来源。