hard to fall asleep

Changing levels of body chemicals called hormones not only make teenagers' bodies develop adult characteristics, but also make it hard for teenagers to fall asleep before 11 pm ．

荷尔蒙是一种人体化学物质水平的变化，它不仅会使青少年的身体发展成熟，还会让青少年的入睡时间推迟至11点后。

i wake myself up because i'm trying too hard to fall asleep.

我彻夜难眠，就是因为我太在意入睡这个心理目标了。

e. g. though it is 12 in the night. i still find it hard to fall asleep.

尽管已经是夜里12点钟了，我发现还是很难入睡。

Xiao Gao: It's great, except that my neighbors make a ruckus every night. It's hard to fall asleep.

小高：非常好，就是我的邻居每天晚上都制造噪音，让人难以入睡。

In bed, it was only natural that we found hard to fall asleep.

睡到床上, 自然很难睡着.

life is not just a nightmare for us, since it is so hard to fall asleep every night.

生活不仅仅是一场恶梦，因为它是对我们如此努力地每天晚上入睡。