- 重点词汇
- 左旋
levorotation; left-handed rotation; sinistrotorsion; levocycloduction; sinistrogyration; levogyration
- 咖啡
coffee; café; java; espresso; cappuccino
- 有用
useful; helpful; good; great; beneficial; practical; valuable; serviceable; utilitarian; avail; be useful; be of use; be of service; use; help; usefulness; utility; of use; of value; of service to