Stock-in-trade (noun)

●Something that someone or something does or makes very well and often.

（典型行為，慣用手法）

Examples:　　

1.Collecting evidence, difficult in others' eyes, is just the stock-in-trade of private detectives.　　

2.The song was perfect for the soft vocals that are her stock-in-trade.

Render sth to sb (phrasal verb)

●To give something to someone.（給予，提供）

Examples:　　

1.You must render your taxes to the government.　　

2.She would render assistance to those she thought were in need.

Get by (phrasal verb)

●To proceed without being discovered, criticized, or punished.（僥幸／勉強混過關）

Examples:　　

1.I have no formal clothes for the occasion.　　Perhaps I can get by in a dark suit?　　

2.The boy got by without answering the teacher's question.

More than on bargained for (idiom)

●An unexpected outcome, especially an unfavorable one; more than one expected.

（出乎意料之外（的後果））

Examples:　　

1.When Betsy brought home the sweet little puppy for a companion, she got more than she bargained for.　　That animal has cost her hundreds of dollars in bills.　　

2.Serving on the board this year has involved more work than I bargained for.

Sneak in(to some place) (phrasal verb)

●To enter a place quietly and in secret, perhaps　　without a ticket or permission.

（潛入，混進，偷偷進入）

Examples:　　

1.Never try to sneak in. Sometimes they arrest you for trespassing.　　

2.The kids tried to sneak into the rock concert, but they were stopped by the guards.