Are you being deliberately obtuse?
你是不是故意装傻？
She can not possibly be so obtuse.
她不可能如此迟钝。
One way to create this obtuse Angle is to lean back further.
形成这种钝角的方法之一是再向后倾斜一点。
He was either normally stupid or being deliberately obtuse.
他要么是真傻，要么是故意装傻。
He was either normally stupid or being deliberately obtuse.
他要么是真傻，要么是故意装傻。
应用推荐