题目内容
v.to question whether a statement or an action is right, legal, etc; to refuse to accept sth.; n. a new or difficult task that tests sb.'s ability and skill
查看答案
搜索结果不匹配？点我反馈
更多问题
n. two or more things joined or mixed together to form a single unit
n. the protection of the natural environment; the official protection of buildings that have historical or artistic importance
adj. easily damaged or broken; not strong and easily becoming ill/sick; small and having a beautiful shape or appearance
v.to change from a gas into a liquid;
微信支付 
支付宝支付