长期以来

for a long time

length / long / forever / always / constantly

chief / head / elder / to grow / to develop / to increase / to enhance

long term / long time / long range (of a forecast)

variant of 期[qi1] / period / cycle

a period of time / phase / stage / classifier for issues of a periodical, courses of study / time / term / period / to hope / Taiwan pr. [qi2]

old variant of 以[yi3]

old variant of 以[yi3]

abbr. for Israel 以色列[Yi3 se4 lie4]

to use / by means of / according to / in order to / because of / at (a certain date or place)

since (a previous event)

to come / to arrive / to come round / ever since / next