对于平稳的趋势的描述，可以使用的动词或动词词组：
to hardly change
to have little change
to keep steady
to level off
to remain constant
to stay the same
表示程度的副词：
1. 程度较大：
considerably
dramatically
greatly
markedly
obviously
quickly
rapidly
sharply
significantly
suddenly
2. 程度较小：
slightly
gradually
slowly
steadily
时间的嵌入
嵌入时间时所使用的介词和介词词组：
in
from……to……
between…….and……
during……and……
at the start of ……
by the end of ……
over ……
at the end of ……
throughout ……
时间’s + 具体数据
责任编辑：sealion1986
