机场灯光系统主要包括哪几个灯光系统？
进近灯光，跑道灯光，滑行道灯光。
暂无解析
翻译：老年人有长处，但也有很大的弱点 —— 老年人容易固执，因此老年人也要有点自觉性。
Which of the following is not true about Canada's manufacturing today?
句子写作：The piano player began to sing loudly.
英语翻译：基金会
Which of the following is NOT one of the characteristics of idioms?
