讲解：
in line
排；行；列:
The children all stood in a line.
孩子们全都站成一排。

Bon vayage!
一路平安；旅途愉快

turn sth down
把…调低；关小:
Please turn the volume down.
请把音量调低些。

leave / let sb alone
不打扰；不惊动:
She's asked to be left alone but the press photographers follow her everywhere.
她要求别打扰她,但是摄影记者到处都跟着她。

grievance (against sb)
不平的事；委屈；抱怨；牢骚:
He had been nursing a grievance against his boss for months.
他几个月来一直对老板心怀不满。

in the name of
凭…的权威；代表:
I arrest you in the name of the law.
我依法逮捕你。