吃透英语课本，提升在校竞争力
v. 尝试；试图；“try”的现在分词
adj. 令人厌烦的；难对付的
That child is very trying.
那个孩子非常难缠。
The beginning of the show is often a trying time because of latecomers.
演出刚开始常常是最难熬的时期，因为总会有人迟到。
They do the best they can in trying circumstances .
他们在艰难的环境下尽自己最大的努力。
keep trying
继续努力；不断尝试
adj.难受的；难堪的；费劲的；令人厌烦的
boring
afflictive
v.尝试（try的ing形式）；试验
experimenting
