1.birthday suit 裸体

例句:I had just stepped out of the shower and somebody walked in and caught me in my birthday suit.
我冲完淋浴刚走出来，有人走了进来，正好撞见我赤身裸体。

2.nude beach 天体营海滩

例句:Two parents take their son on a vacation and go to a nude beach.
父母亲带著儿子到天体营海滩度假。

3.try to 尝试

例句:I think we should try to buy more time.
我想我们应该设法稽迟时间。

4.open to 打开

例句:The scheme is also open to non-members.
该方案也对非正式成员开放。