ponder: vi.仔细考虑；沉思，默想 (on; over; upon)。 With the great seriousness he pondered upon the problem. 他极其严肃地仔细考虑问题。vt.衡量，估量。 He pondered his words thoroughly. 他说每一句话都要仔细掂量。n.-ation
lately: adv.近来，最近。 ★英国口语中的否定句，疑问句多用 lately, 肯定句则用其他说法。 I haven't seen him lately . Have you seen him lately I saw him recently [a short time ago].
