- available 出现在下面的课文中
- Lesson 38 The first calender
- Lesson 41 Illusions of pastoral peace
- Lesson 44 Speed and comfort
- Lesson 30 Exploring the sea-floor
- Lesson 38 Water and the traveller
- Episode 15 Second Honeymoon ACT I
avail(有用) + able(能…的) → 可用的
单词造句: